PLN-101095

INTEGRIS-PSC featured in an oral late breaker presentation SOUTH SAN FRANCISCO, Calif., Nov. 18, 2024 (GLOBE NEWSWIRE) -- Pliant Therapeutics, Inc. (Nasdaq: PLRX), a late-stage biotechnology company and leader in the discovery and development of novel therapeutics for the treatment of fibrotic diseases, today announced the presentation of clinical data at The Liver Meeting® 2024 of the American Association for the Study of Liver Diseases (AASLD) being held in San Diego, California. Bexotegrast, an oral inhibitor of αvβ6 and αvβ1 integrins, was shown to improve markers and symptoms of cholestasis and stabilized markers of liver fibrosis in participants with primary sclerosing cholangitis: Week 24 results from the Phase 2 INTEGRIS-PSC trial In an oral late breaker presentation, Kris Kowdley, M.D., Director, Liver Institute Northwest and Professor of Medicine, Elson S. Floyd College of Medicine at Washington State University, reviewed the positive data from the INTEGRIS-PSC trial that demonstrated bexotegrast was well tolerated across all doses tested and displayed antifibrotic and anti-cholestatic activity across multiple measures in patients with primary sclerosing cholangitis (PSC). Improvements included improvements in liver stiffness, Enhanced Liver Fibrosis (ELF) scores, as well as liver biochemistry and magnetic resonance imaging (MRI). Identification of novel inflammatory serum and urinary protein biomarkers for PSC In a poster presentation, Johanna Schaub, Ph.D., Principal Scientist II, Translational Sciences at Pliant Therapeutics, presented a study that combined two unique proteomic screening approaches to identify novel diagnostic biomarkers in patients with PSC. Results showed the discovery of dozens of putative serum and urine biomarker candidates along with previously described biomarkers, validating this approach. In addition, this approach yielded proteins previously proposed to predict progression in primary biliary cholangitis and cirrhosis, suggesting a role in predicting progression in PSC. The posters presented at AASLD will be made available on the Publications page of the Pliant website, www.PliantRx.com, at the time of presentation. About Pliant Therapeutics, Inc.Pliant Therapeutics is a late-stage biopharmaceutical company and leader in the discovery and development of novel therapeutics for the treatment of fibrotic diseases. Pliant's lead product candidate, bexotegrast (PLN-74809), is an oral, small molecule, dual selective inhibitor of αvß6 and αvß1 integrins that is in development in the lead indications for the treatment of idiopathic pulmonary fibrosis, or IPF, and primary sclerosing cholangitis, or PSC. Bexotegrast has received Fast Track Designation and Orphan Drug Designation from the U.S. Food and Drug Administration (FDA) in IPF and PSC and Orphan Drug Designation from the European Medicines Agency in IPF and PSC. Pliant has initiated BEACON-IPF, an adaptive Phase 2b/3 trial of bexotegrast in IPF. Pliant is conducting a Phase 1 study for its third clinical program, PLN-101095, a small molecule, dual-selective inhibitor of αvß8 and αvß1 integrins, that is being developed for the treatment of solid tumors. In addition, Pliant has received regulatory clearance for the conduct of a Phase 1 study of PLN-101325, a monoclonal antibody agonist of integrin α7β1 targeting muscular dystrophies. For additional information, please visit: www.PliantRx.com. Follow us on social media X, LinkedIn, and Facebook. Forward-Looking Statements Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "may," "will," "expect," "anticipate," "estimate," "intend," and similar expressions (as well as other words or expressions referencing future events, conditions, or circumstances) are intended to identify forward-looking statements. These statements include those regarding the safety, tolerability, pharmacodynamics and therapeutic potential of bexotegrast; our plans for the future development of bexotegrast; and bexotegrast’s potential to become a treatment for PSC. Because such statements deal with future events and are based on our current expectations, they are subject to various risks and uncertainties and actual results, performance or achievements of Pliant Therapeutics could differ materially from those described in or implied by the statements in this press release. These forward-looking statements are subject to risks and uncertainties, including those related to the development and commercialization of our product candidates, including the impact of current regulatory, macroeconomic and marketplace conditions, our reliance on third parties for critical aspects of our development operations, the risks inherent in the drug development process, the risks regarding the accuracy of our estimates of expenses and timing of development, our capital requirements and the need for additional financing, including the availability of additional term loans under our loan facility, and our ability to obtain and maintain intellectual property protection for our product candidates. These and additional risks are discussed in the sections titled "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Quarterly Report on Form 10-Q for the period ended September 30, 2024, which is available on the SEC's website at www.sec.gov. Unless otherwise noted, Pliant is providing this information as of the date of this news release and does not undertake any obligation to update any forward-looking statements contained in this document as a result of new information, future events or otherwise. Investor and Media Contact: Christopher KeenanVice President, Investor Relations and Corporate CommunicationsPliant Therapeutics, Inc.ir@pliantrx.com

BEACON-IPF Phase 2b trial on track for full enrollment in the first quarter of 2025 with data anticipated in mid-2026 SOUTH SAN FRANCISCO, Calif., Nov. 07, 2024 (GLOBE NEWSWIRE) -- Pliant Therapeutics, Inc. (Nasdaq: PLRX), a late-stage clinical biotechnology company and leader in the discovery and development of novel therapeutics for the treatment of fibrotic diseases, today provided a corporate update and reported third quarter 2024 financial results. “A highlight to this quarter’s progress was the continued strong execution of our BEACON-IPF Phase 2b/3 trial which is enrolling well and on track to complete enrollment in the first quarter of 2025,” said Bernard Coulie, M.D., Ph.D., President and Chief Executive Officer of Pliant. “We are pleased with the interest from the global physician and patient communities in participating in BEACON-IPF and look forward to sharing data in mid-2026. Additionally, we made progress across the portfolio with the goal of bringing potential therapies to patients.” Third Quarter and Recent Highlights Bexotegrast Highlights Enrollment remains on track in BEACON-IPF, a pivotal adaptive Phase 2b/3 trial of bexotegrast in patients with idiopathic pulmonary fibrosis (IPF). The BEACON-IPF Phase 2b/3 trial is a 52-week, multinational, randomized, dose-ranging, double-blind, placebo-controlled trial evaluating bexotegrast at once-daily doses of 160 mg or 320 mg. The Phase 2b portion of BEACON-IPF will enroll 360 patients with IPF. Enrollment in this portion of this trial is expected to be complete in the first quarter of 2025 with data anticipated in mid-2026.Results from Phase 2a PET imaging target engagement trial published in the American Journal of Respiratory and Critical Care Medicine (AJRCCM). Also known as the “Blue Journal,” AJRCCM is a leading peer-reviewed journal published by the American Thoracic Society. The publication reviews the previously reported positive results from an open-label trial in which bexotegrast showed dose-dependent αvβ6 integrin receptor occupancy in lungs of patients with IPF. Pipeline Programs Phase 1 trial of PLN-101095 in solid tumors is progressing with dosing of the third of five cohorts. PLN-101095 is an oral, small molecule, dual selective inhibitor of αvβ8 and αvβ1 integrins designed to block TGF-β activation in the tumor microenvironment. The Company has completed enrollment in the third of five cohorts in the Phase 1 open-label, dose-escalation trial. In this trial, PLN-101095 is being tested as monotherapy and in combination with pembrolizumab in patients with solid tumors that are resistant to immune checkpoint inhibitors. Preliminary data is expected in early 2025.PLN-101325 applications beyond muscular dystrophies. PLN-101325 is a monoclonal antibody that acts as an allosteric agonist of integrin α7β1, currently in development for treatment of muscular dystrophies. The Company is currently generating additional evidence in support of potential expansion of the scope of PLN-101325 prior to initiating a Phase 1 trial. Corporate Highlights Appointment of Gary Palmer, M.D. as Senior Vice President of Medical Affairs. Dr. Palmer brings over 25 years of global leadership experience in medical affairs from biopharmaceutical companies of various sizes and stages, and across multiple therapeutic areas including pulmonary medicine, immunology and neurology. Most recently, Dr. Palmer served as Senior Vice President of Global Medical Affairs, Immunology and Neuroscience at Bristol Myers Squibb. Third Quarter 2024 Financial Results Research and development expenses were $47.8 million, as compared to $32.3 million for the prior-year quarter. The increase was primarily driven by BEACON-IPF, a Phase 2b/3 trial of bexotegrast in patients with IPF.General and administrative expenses were $14.3 million, as compared to $15.3 million for the prior-year quarter. The decrease was primarily due to professional service expenses.Net loss of $57.8 million as compared to $41.5 million for the prior-year quarter. The increase was primarily due to higher operating expenses driven by BEACON-IPF.As of September 30, 2024, the Company had cash, cash equivalents and short-term investments of $406.0 million. About Pliant Therapeutics, Inc. Pliant Therapeutics is a late-stage biopharmaceutical company and leader in the discovery and development of novel therapeutics for the treatment of fibrotic diseases. Pliant's lead product candidate, bexotegrast (PLN-74809), is an oral, small molecule, dual selective inhibitor of αvß6 and αvß1 integrins that is in development in the lead indications for the treatment of idiopathic pulmonary fibrosis, or IPF, and primary sclerosing cholangitis, or PSC. Bexotegrast has received Fast Track Designation and Orphan Drug Designation from the U.S. Food and Drug Administration (FDA) in IPF and PSC and Orphan Drug Designation from the European Medicines Agency in IPF and PSC. Pliant has initiated BEACON-IPF, an adaptive Phase 2b/3 trial of bexotegrast in IPF. Pliant is conducting a Phase 1 study for its third clinical program, PLN-101095, a small molecule, dual-selective inhibitor of αvß8 and αvß1 integrins, that is being developed for the treatment of solid tumors. In addition, Pliant has received regulatory clearance for the conduct of a Phase 1 study of PLN-101325, a monoclonal antibody agonist of integrin α7β1 targeting muscular dystrophies. For additional information, please visit: www.PliantRx.com. Follow us on social media X, LinkedIn, and Facebook. Forward-Looking StatementsStatements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "may," "will," "expect," "anticipate," "estimate," "intend," and similar expressions (as well as other words or expressions referencing future events, conditions, or circumstances) are intended to identify forward-looking statements. These statements include those regarding the safety, tolerability, pharmacodynamics and therapeutic potential of bexotegrast; our ability to complete enrollment in BEACON-IPF in the first quarter of 2025; our plans for the future development of bexotegrast, PLN-101325 and PLN-101095, including the potential expansion of PLN-101325 into additional indications in organ systems outside of muscle; bexotegrast’s potential to become a treatment for IPF or PSC; the anticipated timing of data and progress from our clinical studies and public announcements related thereto; and discussions with regulatory authorities. Because such statements deal with future events and are based on our current expectations, they are subject to various risks and uncertainties and actual results, performance or achievements of Pliant Therapeutics could differ materially from those described in or implied by the statements in this press release. These forward-looking statements are subject to risks and uncertainties, including those related to the development and commercialization of our product candidates, including any delays in our ongoing or planned preclinical or clinical trials, the impact of current macroeconomic and marketplace conditions, including the effects of COVID-19, on our business, operations, clinical supply and plans, our reliance on third parties for critical aspects of our development operations, the risks inherent in the drug development process, the risks regarding the accuracy of our estimates of expenses and timing of development, our capital requirements and the need for additional financing, including the availability of additional term loans under our loan facility, and our ability to obtain and maintain intellectual property protection for our product candidates. These and additional risks are discussed in the sections titled "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Quarterly Report on Form 10-Q for the period ended September 30, 2024 which we are filing with the SEC today, available on the SEC's website at www.sec.gov. Unless otherwise noted, Pliant is providing this information as of the date of this news release and does not undertake any obligation to update any forward-looking statements contained in this document as a result of new information, future events or otherwise. Investor and Media Contact: Christopher Keenan Vice President, Investor Relations and Corporate Communications Pliant Therapeutics, Inc. ir@pliantrx.com Pliant Therapeutics, Inc.Condensed Statements of Operations(Unaudited)(In thousands, except number of shares and per share amounts) Three Months Ended September 30, 2024 2023 Revenue$— $— Operating expenses: Research and development (47,754) (32,339)General and administrative (14,260) (15,346)Total operating expenses (62,014) (47,685)Loss from operations (62,014) (47,685)Interest and other income (expense), net 5,128 6,515 Interest expense (877) (317)Net loss$(57,763) $(41,487)Net loss per share - basic and diluted$(0.95) $(0.70)Shares used in computing net loss per share - basic and diluted 60,730,935 59,688,451 Pliant Therapeutics, Inc.Condensed Balance Sheets(Unaudited)(In thousands) September 30,2024 December 31,2023Assets Current assets Cash and cash equivalents$79,616 $63,234 Short-term investments 324,897 431,011 Prepaid expenses and other current assets 5,518 11,257 Total current assets 410,031 505,502 Property and equipment, net 5,671 3,567 Operating lease right-of-use assets 28,054 1,211 Restricted cash 1,482 1,482 Other non-current assets 427 392 Total assets$445,665 $512,154 Liabilities and stockholders’ equity Current liabilities Accounts payable$6,890 $4,531 Accrued research and development 23,025 12,456 Accrued liabilities 9,715 10,219 Operating lease liabilities, current 322 1,318 Total current liabilities 39,952 28,524 Operating lease liabilities, non-current 29,752 — Long-term debt 30,139 10,054 Total liabilities 99,843 38,578 Stockholders’ equity Preferred stock — — Common stock 6 6 Additional paid-in capital 1,005,288 972,973 Accumulated deficit (660,320) (499,748)Accumulated other comprehensive gain 848 345 Total stockholders’ equity 345,822 473,576 Total liabilities and stockholders’ equity$445,665 $512,154