FGEN FibroGen Inc

FibroGen, Inc. (NASDAQ: FGEN) today announced that the U.S. Food and Drug Administration (FDA) has cleared the Company’s Investigational New Drug (IND) of FG-3165, a galectin-9 (Gal9) targeted monoclonal antibody under development for treatment of solid tumors characterized by high Gal9 levels of expression.

“The FDA’s IND clearance is an important achievement for us, and we are pleased to advance another product from our promising oncology pipeline into the clinic,” said Thane Wettig, Chief Executive Officer of FibroGen. “To date, FG-3165 has demonstrated anti-tumor activity with improved survival in combination with other immune modulatory therapies in mouse cancer models and has shown excellent tolerability in nonclinical safety studies. We are excited to begin enrollment in a Phase 1 trial in the second half of this year and explore the potential of FG-3165 in enhancing anti-tumor immune responses in the tumor microenvironment.”

The FDA IND clearance enables FibroGen to initiate a Phase 1 clinical trial evaluating the safety and efficacy of FG-3165 in patients with select solid tumors. The trial is anticipated to begin enrollment in the second half of 2024.

About FG-3165FG-3165 is a galectin-9 (“Gal9”) targeted antibody under development for treatment of solid tumors and potentially hematologic malignancies characterized by high Gal9 levels of expression. Gal9 has been reported to signal through multiple immune checkpoints on lymphocytes, including TIM3, VISTA, and PD-1, suppressing T and natural killer cell activation. FG-3165 selectively binds to Gal9 with high affinity and inhibits its ability to induce lymphocyte cell death, resulting in enhanced tumor cell killing.

Toxicology material as well as GMP material for the upcoming Phase 1 clinical trial was manufactured in partnership with Just-Evotec Biologics.

About FibroGen FibroGen, Inc. is a biopharmaceutical company focused on accelerating the development of novel therapies at the frontiers of cancer biology. Pamrevlumab, a fully human anti-CTGF monoclonal antibody, is in clinical development for the treatment of metastatic pancreatic cancer and locally advanced unresectable pancreatic cancer (LAPC). Roxadustat (爱瑞卓®, EVRENZOTM) is currently approved in China, Europe, Japan, and numerous other countries for the treatment of anemia in chronic kidney disease (CKD) patients on dialysis and not on dialysis. Roxadustat is in clinical development for chemotherapy-induced anemia (CIA) and a Supplemental New Drug Application (sNDA) has been accepted for review by the China Health Authority. FG-3246 (also known as FOR46), a first-in-class antibody-drug conjugate (ADC) targeting CD46 is in development for the treatment of metastatic castration-resistant prostate cancer. This program also includes the development of an associated CD46-targeted PET biomarker. In addition, FibroGen has expanded its research and development portfolio to include two immuno-oncology product candidates for the treatment of solid tumors. For more information, please visit www.fibrogen.com.

Forward-Looking Statements This release contains forward-looking statements regarding FibroGen’s strategy, future plans and prospects, including statements regarding its Gal9 clinical program. These forward-looking statements include, but are not limited to, statements regarding the efficacy, safety, and potential success of FibroGen product candidates, and statements about FibroGen’s plans and objectives and typically are identified by use of terms such as “may,” “will”, “should,” “on track,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue” and similar words, although some forward-looking statements are expressed differently. FibroGen’s actual results may differ materially from those indicated in these forward-looking statements due to risks and uncertainties related to the continued progress and timing of its various programs, including the enrollment and results from ongoing and potential future clinical trials, and other matters that are described in FibroGen’s most recent quarterly and annual reports on Form 10-Q and Form 10-K, respectively,as filed with the Securities and Exchange Commission (SEC), including the risk factors set forth therein. Investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release, and FibroGen undertakes no obligation to update any forward-looking statement in this press release, except as required by law.

For Investor Inquiries:David DeLucia, CFAVice President, Head of Investor Relations and Corporate FP&Air@fibrogen.com

For Media Inquiries:Simon MillerVice President, Marketing and Corporate Communicationsmedia@fibrogen.com