on december 8 2021, alphamab oncology (stock code: 9966.hk)，3d medicines (beijing) co., ltd. (3dmed), and simcere pharmaceutical group limited (simcere) jointly announced that the first batch of prescriptions for the world's first subcutaneously injected pd-l1 antibody envafolimab has been implemented across the country.
now domestic cancer patients who meet the approved indications and need immunotherapy treatments have a more convenient and safe option that could be subcutaneously injected.
envafolimab is an innovative anti-tumor immunotherapy drug codeveloped by alphamab oncology, 3dmed and simcere and achieved a number of "firsts": envafolimab is the world's first subcutaneously injected pd-(l)1, china's first and only immunotherapy drug with cross-tumor indications, and the first domestically produced pd-l1. envafolimab can be administered in 30 seconds, saving a lot of patient time and medical resources compared to intravenous administration. the more convenient and safer dosage form will provide patients with a better treatment experience and quality of life, and bring hope to patients who are intolerant to intravenous infusion.
a pivotal phaseⅱclinical study, led by professor lin shen from peking university cancer hospital and institute，has evaluated the efficacy and safety of envafolimab in patients with advanced msi-h/dmmr tumors. the updated clinical data presented at csco 2021 showed that the objective response rate (orr) of patients who received envafolimab as second or later-line treatment is 44.7%, including 12 (11.7%) cases of complete response (cr). the responses were durable, and the rates of durable response at 12 months in patients with advanced colorectal cancer (crc), advanced gastric cancer, other advanced solid tumors, and all patients were 89.3%, 100%, 100%, and 93.2%, respectively. the median progression-free survival (pfs) was 11.1 months, 12-month overall survival (os) rate was 73.6%. envafolimab was well tolerated in this study with no cases of immune-related pneumonitis, immune-related colitis, or immune-related nephritis reported.
professor shen lin said, “envafolimab has comparable efficacy to imported pd-(l)1 antibodies, while being more convenient to administer subcutaneously than intravenously. compared with other immune checkpoint inhibitors, envafolimab is administered at a lower dosage and has fewer adverse immune reactions while avoiding intravenous infusion reactions. its unique safety profile is particularly suitable for frail elderly patients with other comorbidities, and the oldest patient in the clinical trial is 96 years old. we look forward to accumulating more clinical data on real-world applications.”
envafolimab is a single domain fc fusion pd-l1 antibody independently invented by alphamab oncology，and co-developed with 3d (beijing) medicines since 2016. on march 30, 2020, alphamab oncology, 3dmed, and simcere reached a strategic cooperation, whereby alphamab oncology is responsible for production and quality control, and 3dmed is responsible for the clinical development in oncology field, and simcere is responsible for the exclusive commercial promotion of products in mainland china.
based on its unique design that allows rapid subcutaneous injection, it has advantages of improved safety, convenience in drug administration, and treatment compliance. patients do not require an intravenous infusion which lowers medical costs. at present, envafolimab is being studied in clinical trials in multiple tumor types in china, the united states and japan, including registration/phase iii clinical trials in multiple indications. envafolimab obtained orphan drug designation from the us fda for the treatment of advanced biliary tract cancer and soft tissue sarcoma. in november 2021, envafolimab obtained the market approval by the chinese national medical products administration for the treatment of msi-h or dmmr advanced solid tumors, including those patients with advanced colorectal cancer who have experienced disease progression following fluoropyrimidine-, oxaliplatin-, and irinotecan-containing chemotherapy regimens as well as patients with other advanced solid tumors who have experienced disease progression following prior treatment and have no satisfactory alternative treatment options.
about alphamab oncology
alphamab oncology is focusing on innovation, production and commercialization of anti-tumor drugs. on december 12, 2019, the company was listed in the mainboard of hong kong stock exchange with stock code 9966.
alphamab has fully integrated proprietary biologics platforms in bi-specifics and protein engineering. its highly differentiated in-house pipeline includes fifteen tumor monoclonal antibodies and bispecific antibodies and a covid-19 bispecific antibody. four products have advanced into phase i-iii clinical trials or pre-marketing stage in china, the united states, japan and australia. in november 2021, envafolimab received marketing authorization from the chinese national medical products administration (nmpa) for the treatment of previously treated msi-h/dmmr advanced solid tumors.
the company also has state-of-the-art manufacturing capabilities designed and built to meet nmpa and eu/fda’s cgmp standards and a complete quality system which has passed the on-site inspection of a european union qualified person. alphamab oncology is committed to building a global leading, multi-dimensional drug development and commercialization platform, focusing on multifunctional biological innovative drugs, and to benefit patients in china and around the world.
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