The following discussion and analysis of our financial condition and results of
operations should be read together with our consolidated financial statements
and the related notes appearing elsewhere in this Annual Report on Form 10-K.
This discussion contains forward-looking statements that involve risks and
uncertainties. As a result of many factors, including those factors set forth in
the "Risk Factors" section of this Annual Report on Form 10-K, our actual
results could differ materially from the results described in or implied by
these forward-looking statements. For convenience of presentation some of the
numbers have been rounded in the text below. Please also see the section
entitled "Special Note Regarding Forward-Looking Statements." We do not assume
any obligation to update any forward-looking statements, whether as a result of
new information, future events or otherwise, except as required by law.

Overview



We are a targeted oncology company developing precision medicines tailored to
biomarker-defined patient groups with specific unmet needs. With our robust
biomarker and translational approach, we aim to develop targeted treatments and
define patient populations who are most likely to respond to treatment. Our
current programs are across the Hippo pathway, RAS pathway, and key immune
signaling pathways in the TME. Our approach in each of our programs is to target
both cancer-driving targets and mechanisms of resistance to other targeted
therapies. Our most advanced targeted oncology program, IK-930, is a
paralog-selective inhibitor of TEAD. The TEAD transcription factors execute the
ultimate step in the Hippo signaling pathway, a known tumor suppressor pathway
that also drives resistance to multiple targeted and chemo therapies. Our first
program in the RAS pathways, IK-595, is designed to trap MEK and RAF in an
inactive complex, more completely inhibiting RAS signals than existing
inhibitors. In addition, we are developing IK-175, an AHR antagonist in
collaboration with Bristol Myers Squibb. Our focus on patient-driven development
allows us to research both known and novel targets, with a shared guiding
principle of aiming to address the unmet needs of biomarker-defined patient
populations. Since we commenced operations in 2016, we have advanced multiple
product candidates into clinical development. In addition, we have a robust
discovery engine and a portfolio of early stage targeted oncology programs.
Across the entirety of our pipeline, we aim to utilize our depth of
institutional knowledge and breadth of tools to efficiently develop the right
drug using the right modality for the right patient.

Our most advanced targeted oncology product candidate, IK-930, is an oral,
paralog-selective, small molecule inhibitor of TEAD, a transcription factor in
the Hippo signaling pathway. The Hippo pathway is genetically altered in
approximately 10% of human cancers and is widely accepted as a prevalent driver
of cancer pathogenesis and a mediator of poor outcomes for patients. In our
ongoing first-in-human Phase 1 clinical trial, we are focusing on indications
that provide the potential to achieve rapid proof-of-concept, such as NF2
deficient mesothelioma and solid tumors with YAP1 or TAZ gene fusions, including
EHE. Approximately 40% of mesothelioma patients are genetically deficient for
the tumor suppressor NF2 and 100% of EHE patients have oncogenic YAP1 or TAZ
gene fusions. In October 2021, our IND for IK-930 was cleared by the FDA and we
subsequently initiated a first-in-human Phase 1 clinical trial to evaluate the
safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary
antitumor activity of IK-930 as a monotherapy in patients with advanced solid
tumors with or without gene alterations in the Hippo pathway. The first patient
was dosed in January 2022. IK-930 received orphan drug designation for the
treatment of mesothelioma from the FDA in March 2022. In June 2022, IK-930 was
granted fast track designation from the FDA for the treatment of unresectable
NF2-deficient mesothelioma. In addition to the monotherapy approach, we plan to
assess IK-930 in combination with other targeted therapies across several
indications with multiple targeted therapies. Based on the role that the Hippo
pathway plays in resistance to other targeted therapies, we believe that IK-930
may expand the patient populations that could benefit from therapies like EGFR
inhibitors, KRAS inhibitors, and MEK inhibitors among others. We have an
established clinical collaboration with AstraZeneca for the evaluation of
osimertinib in combination with IK-930 for patients with EGFR-mutant lung
cancers as a cohort in the clinical program. Initial data from the monotherapy
IK-930 clinical program is expected in the second half of 2023.

We nominated a development candidate in our RAS pathway program in November
2022. The RAS pathway is implicated in at least half a million new cancer
diagnoses each year in the United States alone. We aim to target the pathway on
multiple levels, including preventing known resistance mechanisms to achieve
deep and sustained responses. Our first program in the space, IK-595, is
designed to achieve novel inhibition of MEK-RAF by trapping MEK and RAF in an
inactive complex, more completely inhibiting RAS signals than existing
inhibitors. IK-595's potential ability to complex CRAF, in particular, prevents
a well-recognized signaling bypass mechanism that cancer cells employ to drive
therapeutic resistance to other drugs in this class. In addition, trapping CRAF
in an inactive complex prevents the kinase independent anti-apoptotic function
in RAS and RAF mutant cancers, a mechanism that cannot be addressed with first
generation MEK inhibitors or pan-RAF inhibitors. We are developing IK-595 as an
oral therapy, with a half-life designed to enable a pharmacokinetic profile that
we believe can be potentially superior to other pathway inhibitors, with the
goal of optimizing the therapeutic window for patients. We plan to submit an IND
to the FDA for IK-595 in the second half of 2023.
These two programs, IK-930 and IK-595, stemmed from our internal discovery
engine, which continues its focus on discovering and developing novel targeted
oncology programs. Our early research follows our philosophy of designing
treatments for selected patient

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populations identified through the genetic make-up of their tumors and with the potential to expand the patient population that can benefit from targeted oncology through tackling mechanisms of therapeutic resistance.



Our pipeline also includes our immune-signaling program targeting AHR with our
novel inhibitor, IK-175. The ongoing Phase 1a/1b clinical trial is evaluating
IK-175 as a monotherapy and in combination with nivolumab in patients with
advanced or metastatic solid tumors, including urothelial carcinomas, for which
current standard-of-care therapy is no longer effective or is intolerable.
Initial clinical data from the program was presented in November 2022 at the
Society for Immunotherapy of Cancer Annual Meeting. These initial data included
a 40% disease control rate and 20% overall response rate in urothelial carcinoma
patients who received IK-175 in combination with nivolumab, with the majority of
combination patients experiencing reduction in their target lesions. The study
is ongoing, and we plan to share updates from the program in 2023.

We were incorporated as a Delaware corporation on March 2, 2016, and our
headquarters is located in Boston, Massachusetts. Since our inception, we
devoted all of our efforts to organizing and staffing our company, acquiring
intellectual property, business planning, raising capital, conducting discovery,
research and development activities, and providing general and administrative
support for these operations. On March 30, 2021, we completed an IPO, in which
we issued and sold 8,984,375 shares of our common stock at a public offering
price of $16.00 per share, including 1,171,875 shares of common stock sold
pursuant to the underwriters' exercise of their option to purchase additional
shares of common stock, for aggregate gross proceeds of $143.8 million (or
$131.3 million after deducting our discounts, commissions and offering
expenses).

To date, we have not had any products approved for sale and have not generated any revenue from product sales.



We have incurred significant net losses in every year since our inception and
expect to continue to incur significant expenses and increasing net losses for
the foreseeable future. Our net losses may fluctuate significantly from quarter
to quarter and year to year and could be substantial. Our ability to generate
product revenue sufficient to achieve profitability will depend on the
successful development and eventual commercialization of one or more of our
current or future product candidates. Our net losses were $68.8 million and
$34.1 million for the years ended December 31, 2022 and 2021, respectively. As
of December 31, 2022, we had an accumulated deficit of $214.2 million. We expect
to continue to incur significant expenses and operating losses for at least the
next several years as we:

advance the development of our product candidate pipeline;

initiate and continue research and preclinical and clinical development of potential new product candidates;

maintain, expand and protect our intellectual property portfolio;

acquire or in-license additional product candidates and technologies;

expand our infrastructure and facilities to accommodate our growing employee base and ongoing development activities;

establish agreements with CROs and CMOs in connection with our preclinical studies and clinical trials;

require the manufacture of larger quantities of our product candidates for clinical development and potential commercialization;

seek marketing approvals for our product candidates that successfully complete clinical trials, if any;

establish a sales, marketing and distribution infrastructure to commercialize any products for which we may obtain marketing approval; and


add operational, financial and management information systems and personnel,
including personnel to support our research and development programs, any future
commercialization efforts and our continued operations as a public company.

As a result, we will need substantial additional funding to support our
continuing operations and pursue our growth strategy. Until such time as we can
generate significant revenue from product sales, if ever, we expect to finance
our operations through the sale of equity instruments, debt financings, or other
capital sources, which may include collaborations with other companies or other
strategic transactions. We may be unable to raise additional funds or enter into
such other agreements or arrangements when needed on favorable terms, or at all.
If we fail to raise capital or enter into such agreements as and when needed, we
may have to significantly delay, reduce or eliminate the development and
commercialization of one or more of our product candidates.

We will not generate revenue from product sales unless and until we successfully
complete clinical development and obtain marketing approval for our product
candidates. The lengthy process of securing marketing approvals for new drugs
requires the expenditure of substantial resources. Any delay or failure to
obtain regulatory approvals would materially adversely affect the development
efforts of

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our product candidates and our business overall. Because of the numerous risks
and uncertainties associated with product development, we are unable to predict
the timing or amount of increased expenses or when or if we will be able to
achieve or maintain profitability. Even if we are able to generate revenue from
product sales, we may not become profitable. If we fail to become profitable or
are unable to sustain profitability on a continuing basis, then we may be unable
to continue our operations at planned levels and be forced to reduce or
terminate our operations.

If we raise additional funds through collaborations, strategic alliances, or
licensing arrangements with third parties, we may have to relinquish valuable
rights to our technologies, future revenue streams, research programs or product
candidates or grant licenses on terms that may not be favorable to us. If we are
unable to raise additional funds through equity or debt financings, when needed,
we may be required to delay, limit, reduce, or terminate our product development
programs or any future commercialization efforts or grant rights to develop and
market product candidates that we would otherwise prefer to develop and market
ourselves.

As of December 31, 2022, we had cash, cash equivalents and marketable securities
of $156.9 million. We believe the existing cash and cash equivalents on hand as
of December 31, 2022 will enable us to fund our operating expenses and capital
expenditure requirements into 2025. To date, we have primarily financed our
operations through proceeds from private placements of preferred stock, payments
from a collaboration agreement, related party revenue and completion of the IPO.
We expect to incur substantial operating losses and negative cash flows from
operations for the foreseeable future as we continue to invest significantly in
research and development of our programs. Our belief with respect to our ability
to fund operations is based on estimates that are subject to risks and
uncertainties. If actual results are different from our estimates, we may need
to seek additional funding sooner that would otherwise be expected. There can be
no assurance that we will be able to obtain additional funding on acceptable
terms, if at all.

Impact of COVID-19 Pandemic



Since the onset of the global pandemic in 2020, we have been closely monitoring
the spread of COVID-19 and its variants, and plan to continue taking steps to
identify and mitigate the adverse impacts on, and risks to, our business posed
by its spread and actions taken by governmental and health authorities to
address the COVID-19 pandemic. In 2021, we adopted a permanent hybrid work model
for those employees who are able to conduct their roles remotely.

The ultimate extent of the impact of the COVID-19 pandemic on our business,
financial condition and results of operations is highly uncertain and will
depend on future developments that cannot be predicted, including new
information that may emerge concerning the severity of the COVID-19 pandemic,
existing and emerging variants and the level of acceptance of vaccines, and
actions taken by government authorities and businesses to help contain or
prevent the further spread of COVID-19. If we, or any of the third parties with
whom we engage, were to experience any shutdowns or other prolonged business
disruptions, our ability to conduct our business in the manner and on the
timelines presently planned could be materially negatively affected, which could
have a material adverse impact on our business, results of operations and
financial condition.

Accordingly, we cannot predict the extent to which our business, financial
condition and results of operations will be affected. We remain focused on
maintaining a strong balance sheet, liquidity and financial flexibility and
continue to monitor developments as we deal with the disruptions and
uncertainties from a business and financial perspective relating to COVID-19 and
variants thereof. We will continue to work diligently with our partners and
stakeholders to advance our clinical studies to the extent safe to do so for
patients, caregivers and healthcare practitioners.

See "Risk Factors" for a discussion of the potential adverse impact of the COVID-19 pandemic on our business, financial condition, and results of operations.

Components of our Results of Operations

Revenue



We have not generated any revenue from product sales and do not expect to
generate any revenue from the sale of products in the foreseeable future. If our
development efforts for our product candidates are successful and result in
regulatory approval and successful commercialization efforts, we may generate
revenue in the future from product sales. We cannot predict if, when, or to what
extent we will generate revenue from the commercialization and sale of our
product candidates. We may never succeed in obtaining regulatory approval for
any of our product candidates.

All of our revenue has been derived from research and development revenue under our Bristol Myers Squibb Collaboration Agreement.


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Collaboration Agreement and Stock Purchase Agreement with Bristol Myers Squibb



In January 2019, we entered into the Bristol Myers Squibb Collaboration
Agreement with Celgene Corporation (which was acquired by Bristol Myers Squibb
in November 2019), pursuant to which Bristol Myers Squibb may elect in its sole
discretion to exclusively license rights to develop and commercialize compounds
(and products and diagnostic products containing such compounds) that modulate
the activity of two collaboration targets, kynurenine and AHR excluding AHR
agonists for inverse agonists, which we are developing as IK-412 and IK-175,
respectively. On a program-by-program basis, through the completion of a Phase
1b clinical trial for each of IK-175 and IK-412, Bristol Myers Squibb has the
exclusive option to exclusively license to develop, commercialize and
manufacture the relevant product candidate worldwide. Concurrent with execution
of the Bristol Myers Squibb Collaboration Agreement, we entered into a stock
purchase agreement with Celgene Corporation (now Bristol Myers Squibb) in
November 2019 ("the Stock Purchase Agreement") pursuant to which we issued
Celgene Corporation 14,545,450 shares of Series A-1 preferred stock.

Bristol Myers Squibb paid a total of $95.0 million in aggregate upfront
consideration related to the Bristol Myers Squibb Collaboration Agreement and
Stock Purchase Agreement. We are eligible to receive $50.0 million, in case of
an exercise of its option with respect to IK-175, and $40.0 million, in case of
an exercise of its option with respect to IK-412. If we do not complete a Phase
1b clinical trial by the end of the research term, we may elect to provide a
data package to Bristol Myers Squibb upon which Bristol Myers Squibb may
exercise the foregoing option for an additional $0.25 million fee. Upon the
delivery of each license, we become eligible to receive up to $265.0 million in
regulatory milestones and $185.0 million in commercial milestones as well as a
tiered royalties at rates ranging from the high single to low teen digits
percentages based on worldwide annual net sales by Bristol Myers Squibb, subject
to specified gross sale reductions.

Operating Expenses

Our operating expenses since inception have consisted solely of research and development costs and general and administrative costs.

Research and Development Expenses



Research and development expenses consist primarily of costs incurred for our
research and development activities. These efforts and costs include external
research costs, personnel costs, consultants, supplies, license fees and
facility-related expenses. We expense research and development costs as
incurred. These expenses include:

employee-related expenses, including salaries, related benefits and stock-based compensation expense, for employees engaged in research and development functions;

expenses incurred under agreements with CROs which are primarily engaged to support our clinical trials;


expenses incurred under agreements with CMOs, which are primarily engaged to
provide drug substance and product for our preclinical research and development
programs, nonclinical and clinical studies and other scientific development
services;

the cost of acquiring and manufacturing preclinical study materials, including manufacturing registration and validation batches;

facilities, depreciation and other expenses, which include direct and allocated expenses for rent and maintenance of facilities and insurance;

acquisition of in-process research and development assets that have no alternative future use;

costs related to compliance with quality and regulatory requirements; and

payments made under third-party licensing agreements.



Advance payments that we make for goods or services to be received in the future
for use in research and development activities are recorded as prepaid expenses.
Such amounts are recognized as an expense as the goods are delivered or the
related services are performed, or until it is no longer expected that the goods
will be delivered or the services rendered.

Product candidates in later stages of clinical development generally have higher
development costs than those in earlier stages of clinical development,
primarily due to the increased size and duration of later-stage clinical trials.
We expect that our research and development expenses will increase substantially
in connection with our planned clinical development activities in the near term
and in the future. At this time, we cannot accurately estimate or know the
nature, timing and costs of the efforts that will be necessary to

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complete the clinical development of, or obtain regulatory approval for, any of
our current or future product candidates. This is due to the numerous risks and
uncertainties associated with product development and commercialization,
including the following:

our ability to add and retain key research and development personnel;

our ability to successfully develop, obtain regulatory approval for, and then successfully commercialize our product candidates;

our successful enrollment in and completion of clinical trials, including our ability to generate positive data from any such trials;

the size and cost of any future clinical trials for existing or future product candidates in our pipeline;

the costs associated with the development of any additional programs we identify in-house or acquire through collaborations and other arrangements and the success of such collaborations;

the terms and timing of any additional collaborations, license or other arrangement, including the timing of any payments thereunder;

our ability to establish and maintain agreements and operate with third-party manufacturers for clinical supply for our clinical trials and commercial manufacturing, if any of our product candidates are approved;

costs related to manufacturing of our product candidates or to account for any future changes in our manufacturing plans;


our ability to obtain and maintain patents, trade secret and other intellectual
property protection and regulatory exclusivity for our product candidates, both
in the United States and internationally;

our ability to obtain and maintain third-party insurance coverage and adequate reimbursement for our product candidates, if and when approved;

the acceptance of our product candidates, if approved, by patients, the medical community and third-party payors;

effectively competing with other products if our product candidates are approved;


the impact of any business interruptions to our operations, including the timing
and enrollment of patients in our planned clinical trials, or to those of our
manufacturers, suppliers, or other vendors resulting from the ongoing COVID-19
pandemic or similar public health crisis; and

our ability to maintain a continued acceptable safety profile for our therapies following approval.



A change in the outcome of any of these variables with respect to the
development of our product candidates could significantly change the costs and
timing associated with the development of that product candidate. We may never
succeed in obtaining regulatory approval for any of our product candidates.

General and Administrative Expenses



General and administrative expenses consist primarily of salaries and other
related costs, including stock-based compensation, for personnel in executive,
finance and administrative functions. General and administrative expenses also
include direct and allocated facility-related costs as well as professional fees
for legal, patent, consulting, investor and public relations, accounting,
auditing, tax services and insurance costs.

We expect that our general and administrative expenses will increase as our
organization and headcount needed in the future to support continued research
and development activities and potential commercialization of our product
candidates. These increases will likely include increased costs related to the
hiring of additional personnel and fees to outside consultants, attorneys and
accountants, among other expenses. Additionally, we expect to incur increased
expenses associated with being a public company, including costs of additional
personnel, accounting, audit, legal, regulatory and tax-related services
associated with maintaining compliance with exchange listing and SEC
requirements, director and officer insurance costs, and investor and public
relations costs.

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Results of Operations

Comparison of the Years Ended December 31, 2022 and 2021

The following table summarizes our results of operations:



                                                              Year Ended December 31,
(In thousands, except percentages)          2022          2021         Dollar Change       Percent Change
Revenue:
Research and development revenue under
  collaboration agreement                 $  15,618     $  30,985     $       (15,367 )                (50 )%
Operating expenses:
Research and development                     64,321        47,108              17,213                   37 %
General and administrative                   22,201        18,015               4,186                   23 %
Total operating expenses                     86,522        65,123              21,399                   33 %
Loss from operations                        (70,904 )     (34,138 )           (36,766 )                108 %
Other income, net                             2,139            23               2,116                 9200 %
Net loss                                  $ (68,765 )   $ (34,115 )   $       (34,650 )                102 %




Revenue

The research and development revenue under collaboration agreement is related to
the Bristol Myers Squibb Collaboration Agreement for the IK-175 and IK-412
programs which was executed in January 2019. The decrease in revenue during the
year ended December 31, 2022, as compared to the same period in the prior year,
was primarily due to change in estimate of the total services to be performed on
the IK-412 program during the remainder of the Bristol Myers Squibb
Collaboration Agreement term. In December 2021, the Company re-assessed the
IK-412 program, which experienced manufacturing delays. Considering these delays
and the timeline of the Bristol Myers Squibb partnership, the Company made the
strategic decision to pause IK-412 development activities, outside of the
committed manufacturing efforts, for the remainder of the Bristol Myers Squibb
research term. As a result of the decision to pause, the Company recorded a
change in estimate during the year ended December 31, 2021 and recognized $16.5
million of research and development revenue.

Research and Development Expenses

The following table summarizes our research and development expenses:



                                                               Year Ended December 31,
(In thousands, except percentages)           2022          2021         Dollar Change       Percent Change
Direct research and development expenses
by program:
IK-930                                     $  10,377     $   8,351     $         2,026                   24 %
IK-175                                         6,829         5,844                 985                   17 %
IK-412                                         3,960         2,984                 976                   33 %
IK-007                                         1,732         2,632                (900 )                (34 )%
IK-595                                         7,499         1,793               5,706                  318 %
Other discovery stage programs                 9,192         9,915                (723 )                 (7 )%
Research and development personnel and
overhead
  expenses and unallocated                    24,732        15,589               9,143                   59 %

Total research and development expenses $ 64,321 $ 47,108 $

     17,213                   37 %



The increase in research and development expense of $17.2 million was primarily attributable to employee-related expenses due to an increase in headcount, research activities and consulting services for the Company's development candidate IK-595, and increased clinical trial costs for IK-930.

General and Administrative Expenses

The following table summarizes our general and administrative expenses:



                                                               Year Ended December 31,
(In thousands, except percentages)           2022          2021         Dollar Change       Percent Change
General and administrative                 $  22,201     $  18,015     $         4,186                   23 %




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The increase in general and administrative expense of $4.2 million was primarily
attributable to an increase in compensation and benefit related expenses due to
an increase in headcount.

Liquidity and Capital Resources

Sources of Liquidity



Since our inception, we have not generated any revenue from product sales and
have incurred significant operating losses. We have not yet commercialized any
products and we do not expect to generate revenue from sales of any product
candidates for several years, if ever. To date, we have financed our operations
primarily through private placements of preferred stock, from upfront payments
from the Bristol Myers Squibb Collaboration Agreement, from cash obtained from
acquisitions, and most recently, from common stock in our IPO. In March 2021, we
completed our IPO in which we received net proceeds, inclusive of the exercise
by the underwriters of their option of purchase additional shares, of
approximately $131.3 million, after deducting underwriting discounts and
commissions and offering expenses.

As of December 31, 2022, we had cash, cash equivalents and marketable securities
of $156.9 million. Based upon our current operating plans, we expect that our
existing cash and cash equivalents balances will enable us to meet our planned
operating expenses and capital expenditure requirements into 2025.

Cash Flows



The following table summarizes our sources and uses of cash for the years ended
December 31, 2022 and 2021:

                                                              Year Ended
                                                             December 31,
(In thousands)                                            2022          2021
Net cash used in operating activities                  $  (74,109 )   $ (60,252 )
Net cash used in investing activities                     (99,284 )      (1,760 )
Net cash provided by financing activities                   1,095       

131,738

Net increase (decrease) in cash and cash equivalents $ (172,298 ) $ 69,726






Operating Activities

Cash flows from operating activities are greatly influenced by our use of cash
for operating expenses and working capital requirements to support the business.
We have historically experienced negative cash flows from operating activities
as we invested in developing our platform, drug discovery efforts and related
infrastructure.

The increase in cash used in operating activities of $13.9 million was
attributable to the increase in our net loss incurred in the year ended December
31, 2022 of $34.7 million, primarily a result of increased spending on research
and development activities as we advance our preclinical and clinical programs.
This was partially offset by a decrease in the realization of revenue previously
deferred of $15.4 million as a result of the Bristol Myers Squibb collaboration
agreement.

Investing Activities

The increase in cash used investing activities of $97.5 million was primarily attributable the purchases of marketable securities of $216.3 million in connection with the Company investing its excess cash, offset by $118.5 of marketable security maturities.

Financing Activities

The decrease in cash provided by financing activities of $130.6 million primarily reflects cash proceeds received in connection with the IPO in March of 2021.



Funding Requirements

We expect our expenses to increase in connection with our ongoing activities,
particularly as we continue the research and development for, initiate clinical
trials for, and seek marketing approval for, our product candidates. In
addition, if we obtain marketing approval for any of our product candidates, we
expect to incur significant commercialization expenses related to product sales,
marketing, manufacturing and distribution. Furthermore, we expect to continue to
incur additional costs associated with

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operating as a public company. Accordingly, we will need to obtain substantial
additional funding in connection with our continuing operations. If we are
unable to raise capital when needed or on attractive terms, we would be forced
to delay, reduce or eliminate our research and development programs or future
commercialization efforts.

We expect that our existing cash, cash equivalents, and marketable securities as
of December 31, 2022, will enable us to fund our operating expenses and capital
expenditure requirements into 2025. We have based this estimate on assumptions
that may prove to be wrong, and we may use our available capital resources
sooner than we currently expect. Our future capital requirements will depend on
many factors, including:


the scope, progress, results and costs of discovery, preclinical development,
laboratory testing and clinical trials for other potential product candidates we
may develop, if any;

the costs, timing and outcome of regulatory review of our product candidates;

our ability to establish and maintain collaborations on favorable terms, if at all;

the achievement of milestones or occurrence of other developments that trigger payments under any collaboration agreements we might have at such time;

the costs and timing of future commercialization activities, including product sales, marketing, manufacturing and distribution, for any of our product candidates for which we receive marketing approval;

the amount of revenue, if any, received from commercial sales of our product candidates, should any of our product candidates receive marketing approval;

the costs of preparing, filing and prosecuting patent applications, obtaining, maintaining and enforcing our intellectual property rights and defending intellectual property-related claims;

the in-licensing or acquisition of assets in line with our strategy;

our headcount growth and associated costs as we expand our business operations and our research and development activities; and

the costs of operating as a public company.



Until such time, if ever, as we can generate substantial product revenue, we
expect to finance our cash needs through a combination of equity offerings, debt
financings, collaborations, strategic alliances and licensing arrangements. We
do not have any committed external source of funds. To the extent that we raise
additional capital through the sale of equity or convertible debt securities,
your ownership interests may be diluted, and the terms of these securities may
include liquidation or other preferences that could adversely affect your rights
as a common stockholder. Any debt financing, if available, may involve
agreements that include restrictive covenants that limit our ability to take
specific actions, such as incurring additional debt, making capital expenditures
or declaring dividends, that could adversely impact our ability to conduct our
business.

If we raise funds through collaborations, strategic alliances or licensing
arrangements with third parties, we may have to relinquish valuable rights to
our technologies, future revenue streams, research programs or product
candidates or to grant licenses on terms that may not be favorable to us. If we
are unable to raise additional funds through equity or debt financings when
needed, we may be required to delay, limit, reduce or terminate our product
development or future commercialization efforts or grant rights to develop and
market product candidates that we would otherwise prefer to develop and market
ourselves.

On April 27, 2022, we filed a shelf registration statement on Form S-3
("Shelf"), with the SEC, which covers the offering, issuance and sale by us of
up to an aggregate of $300.0 million of our common stock, preferred stock, debt
securities, warrants and/or units of any combination thereof. We simultaneously
entered into a sales agreement with Jefferies LLC, as sales agent, to provide
for the issuance and sale by us of up to $100.0 million of our common stock from
time to time in "at-the-market" offerings under the Shelf, which we refer to as
the ATM Program. The Shelf was declared effective by the SEC on May 5, 2022. As
of the date hereof, no sales have been made pursuant to the ATM Program.

Contractual Obligations



We have a non-cancelable operating lease agreement for our office, lab and
animal care facility space in our Boston, Massachusetts corporate headquarters.
We expect lease payments under this commitment to total $1.8 million in 2023 and
increase annually through the lease expiration in 2026. Our total future minimum
lease payments for each of the next five years and in total are included in Note
14.

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We enter into contracts in the normal course of business with CROs and CMOs for
clinical trials, preclinical research studies and testing, manufacturing and
other services and products for operating purposes. These contracts typically,
do not contain any minimum purchase commitments and are cancelable by us,
typically upon prior notice of 30 days. Payments due upon cancelation consist
only of payments for services provided and expenses incurred up to the date of
cancelation.

We may incur potential contingent payments upon our achievement of clinical,
regulatory and commercial milestones, as applicable, or that we may be required
to make royalty payments under license agreements we have entered into with
various entities pursuant to which we have in-licensed certain intellectual
property such as our patent license agreement with the University of Texas at
Austin and our license agreement with AskAt, Inc. Due to the uncertainty of the
achievement and timing of the events requiring payment under these agreements,
the amounts to be paid by us are not fixed or determinable at this time and have
not been included in the table above.

Critical Accounting Policies and Use of Estimates



Our management's discussion and analysis of financial condition and results of
operations is based on our consolidated financial statements, which have been
prepared in accordance with accounting principles generally accepted in the
United States ("GAAP"). The preparation of these financial statements requires
us to make estimates and judgments that affect the reported amounts of assets,
liabilities and expenses and the disclosure of contingent assets and liabilities
in our consolidated financial statements during the reporting periods. These
items are monitored and analyzed by us for changes in facts and circumstances,
and material changes in these estimates could occur in the future. We base our
estimates on historical experience, known trends and events, and on various
other factors that we believe are reasonable under the circumstances, the
results of which form the basis for making judgments about the carrying value of
assets and liabilities that are not readily apparent from other sources. Changes
in estimates are reflected in reported results for the period in which they
become known. Actual results may differ materially from these estimates under
different assumptions or conditions.

While our significant accounting policies are more fully described in the Notes
to our consolidated financial statements included elsewhere in this Annual
Report on Form 10-K, we believe the following accounting policies to be the most
critical in understanding the judgments and estimates we use in preparing our
consolidated financial statements:

Revenue Recognition



To determine revenue recognition we perform the following five steps: (i)
identify the contract(s) with a customer; (ii) identify the performance
obligations in the contract; (iii) determine the transaction price; (iv)
allocate the transaction price to the performance obligations in the contract;
and (v) recognize revenue when (or as) we satisfy a performance obligation. At
contract inception, once the contract is determined to be within the scope of
Topic 606, we assess the goods or services promised within each contract and
determine those that are performance obligations, then assess whether each
promised good or service is distinct. When we offer options for additional goods
or services, such as to receive a license for intellectual property or for
additional goods or services, we evaluate whether such options contain material
rights that should be treated as additional performance obligations. Once
performance obligations are identified, we then recognize as revenue the amount
of the transaction price that the Company allocated to the respective
performance obligation when (or as) each performance obligation is satisfied,
either at a point in time or over time. If the performance obligation is
satisfied over time, we recognize revenue based on the use of an input method.

At each reporting date, we calculate the measure of progress for the performance
obligations transferred over time. The calculation generally uses an input
measure based on costs incurred to-date relative to estimated total costs to
complete the transfer of the performance obligation. The measurement of progress
is then used to calculate the total revenue earned, including any cumulative
catch-up adjustment.

Accrued Research and Development Expenses



As part of the process of preparing our consolidated financial statements, we
are required to estimate our accrued research and development expenses. This
process involves reviewing open contracts and purchase orders, communicating
with our applicable personnel to identify services that have been performed on
our behalf and estimating the level of service performed and the associated cost
incurred for the service when we have not yet been invoiced or otherwise
notified of actual costs. The majority of our service providers invoice us in
arrears for services performed, on a pre-determined schedule or when contractual
milestones are met; however, some require advance payments. We make estimates of
our accrued expenses as of each balance sheet date in the consolidated financial
statements based on facts and circumstances known to us at that time. We
periodically confirm the accuracy of these

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estimates with the service providers and make adjustments, if necessary. Examples of estimated accrued research and development expenses include fees paid to:

vendors, including research laboratories, in connection with preclinical development activities;

CROs and investigative sites in connection with preclinical studies; and

CMOs in connection with drug substance and drug product formulation of preclinical studies.



We base the expense recorded related to external research and development on our
estimates of the services received and efforts expended pursuant to quotes and
contracts with multiple CMOs and CROs that supply, conduct and manage
nonclinical studies on our behalf. The financial terms of these agreements are
subject to negotiation, vary from contract to contract and may result in uneven
payment flows. There may be instances in which payments made to our vendors will
exceed the level of services provided and result in a prepayment of the expense.
In accruing service fees, we estimate the time period over which services will
be performed and the level of effort to be expended in each period. If the
actual timing of the performance of services or the level of effort varies from
the estimate, we adjust the accrual or the amount of prepaid expenses
accordingly. Although we do not expect our estimates to be materially different
from amounts actually incurred, our understanding of the status and timing of
services performed relative to the actual status and timing of services
performed may vary and may result in reporting amounts that are too high or too
low in any particular period. To date, there have not been any material
adjustments to our prior estimates of accrued research and development expenses.

Stock-Based Compensation



We account for stock-based compensation awards in accordance with ASC 718,
Compensation-Stock Compensation (ASC 718). ASC 718 requires all stock-based
payments, including grants of stock options, to be recognized in the
consolidated statement of operations and comprehensive loss based on their grant
date fair values. We estimate the fair value of each stock option grant using
the Black-Scholes option-pricing model. Calculating the fair value of
stock-based awards requires that we make subjective assumptions.

Pursuant to ASC 718, we measure stock-based awards at fair value on the date of
grant and recognize the corresponding stock-based compensation expense of those
awards on a straight-line basis over the requisite service period, which is
generally the vesting period of the respective award. We have historically
granted stock options with exercise prices equivalent to the fair value of our
common stock as of the date of grant.

The Black-Scholes option-pricing model uses the following inputs: the fair value
of our common stock, the expected volatility of our common stock, the expected
term of our stock options, the risk-free interest rate for a period that
approximates the expected term of our stock options and our expected dividend
yield. Due to the lack of a public market for our common stock and a lack of
company-specific historical and implied volatility data, we have based our
computation of expected volatility on the historical volatility of a
representative group of public companies with similar characteristics to us,
including stage of product development, life science industry focus, length of
trading history and similar vesting provisions. The historical volatility data
is calculated based on a period of time commensurate with the expected term
assumption. We will continue to apply this process until a sufficient amount of
historical information regarding the volatility of our own stock price becomes
available or until circumstances change, such that the identified entities are
no longer representative companies. In the latter case, more suitable, similar
entities whose share prices are publicly available would be utilized in the
calculation. We use the simplified method as prescribed by the SEC Staff
Accounting Bulletin No. 107, Share-Based Payment, to calculate the expected term
for options granted to employees as we do not have sufficient historical
exercise data to provide a reasonable basis upon which to estimate the expected
term. Under this approach, the weighted-average expected option term is presumed
to be the average of the contractual term (ten years) and the vesting term
(generally four years) of our stock options. We utilize this method due to lack
of historical exercise data and the "plain-vanilla" nature of our stock-based
awards. The expected term is applied to the stock option grant group as a whole,
as we do not expect substantially different exercise or post-vesting termination
behavior among our employee population. For options granted to non-employees, we
utilize the contractual term of the arrangement as the basis for the expected
term assumption. The risk-free interest rate is based on a treasury instrument
whose term is consistent with the expected term of the stock options. The
expected dividend yield is assumed to be zero as we have never paid cash
dividends and have no current plans to pay any cash dividends on our common
stock. The fair value of each restricted common stock award is estimated on the
date of grant based on the fair value of our common stock on that same date.

Determination of Fair Value of Common Stock contractual obligation



Historically, the fair value of the shares of common stock underlying the stock
options was determined by the Company's board of directors. Because there was no
public market for the Company's common stock prior to the Company's IPO, the
board of directors determined fair value of common stock at the time of grant of
the option by considering a number of objective and subjective factors

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including independent third-party valuations of the Company's common stock,
sales of convertible preferred stock to unrelated third parties, operating and
financial performance, the lack of liquidity of capital stock and the general
and industry specific economic outlook, among other factors. Following the
Company's IPO, the fair value of the Company's common stock has been determined
based on the closing price of the Company's common stock on the Nasdaq Global
Select Market.

Emerging Growth Company

In April 2012, the JOBS Act, was enacted. Section 107 of the JOBS Act provides
that an "emerging growth company" ("EGC"), can take advantage of the extended
transition period provided in Section 7(a)(2)(B) of the Securities Act of 1933,
as amended, (the "Securities Act") for complying with new or revised accounting
standards. Thus, an EGC can delay the adoption of certain accounting standards
until those standards would otherwise apply to private companies. We have
elected to use the extended transition period for new or revised accounting
standards during the period in which we remain an emerging growth company;
however, we may adopt certain new or revised accounting standards early.

We will remain an emerging growth company until the earliest to occur of: (1)
the last day of the fiscal year in which we have more than $1.235 billion in
annual revenue; (2) the date we qualify as a "large accelerated filer," with at
least $700.0 million of equity securities held by non-affiliates; (3) the date
on which we have issued more than $1.0 billion in non-convertible debt
securities during the prior three-year period; and (4) the last day of the
fiscal year ending after the fifth anniversary of our initial public offering.

We are also a "smaller reporting company" as defined in the Exchange Act. We may
continue to be a smaller reporting company even after we are no longer an
emerging growth company. We may take advantage of certain of the scaled
disclosures available to smaller reporting companies until the fiscal year
following the determination that our voting and non-voting common stock held by
non-affiliates is more than $250.0 million measured on the last business day of
our second fiscal quarter, or our annual revenues are more than $100.0 million
during the most recently completed fiscal year and our voting and non-voting
common stock held by non-affiliates is more than $700.0 million measured on the
last business day of our second fiscal quarter.

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