ArriVent Biopharma, a company that secures rights to drugs from emerging markets to develop them for Western markets, is adding to its pipeline with a Phase 1-ready drug candidate from China that has potential applications in gastrointestinal cancers.
The company on Wednesday announced it paid $47 million up front to license MRG007, a drug developed by Lepu Biopharma, a Shanghai-based developer of cancer therapies.
MRG007 is an antibody drug conjugate (ADC), a type of therapy made by linking a toxic drug payload to a targeting antibody. Lepu has not disclosed the target of the drug, nor has ArriVent. But ArriVent said that based on preclinical studies, it believes the Lepu ADC has best-in-class potential.
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It’s possible the drug class ArriVent is referring to is drugs that target claudin 18.2, a protein highly expressed in gastrointestinal cancers. Claudin 18.2, or CLDN18.2, is a top target for GI cancer drug research. This past October, Astellas Pharma’s Vyloy became the first FDA-approved CLDN18.2-targeting drug. Vyloy, a monoclonal antibody, is approved for use with chemotherapy to treat advanced cases of gastroesophageal junction adenocarcinoma, a rare type of GI cancer. The Japanese pharma company’s clinical development program for the drug also includes testing the drug in GEJ cancers with a checkpoint inhibitor and chemotherapy. A separate study is evaluating the drug in pancreatic adenocarcinoma.
Other companies are pursuing CLDN18.2, but with ADCs. AstraZeneca’s AZD0901 is in Phase 3 testing in advanced gastric and GEJ cancers. Elevation Oncology’s ADC, EO-3021, is in early clinical development for advanced solid tumors, including GI cancers. Data are expected in the first half of this year.
According to ArriVent, MRG007 has shown robust antitumor activity in preclinical models of GI cancers. The research also shows a favorable therapeutic index based on studies that could support an investigational new drug application. The company said it plans a submission for the first half of this year. The initial focus will be in colorectal and pancreatic cancers as well as other GI cancers.
ArriVent’s most advanced program is firmonertinib (also known as furmonertinib), a brain-penetrating oral small molecule licensed from Shanghai-based Allist Pharma. This drug is already approved in China. ArriVent has advanced the drug to Phase 3 testing in non-small cell lung cancer driven by EGFR exon 20 insertion mutations. The ArriVent pipeline also includes two discovery-stage ADCs, one from Aarvik Therapeutics and the other from Jiangsu Alphamab Biopharmaceuticals.
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The deal for the Lepu ADC comes nearly a year after ArriVent debuted on the Nasdaq with a $175 million IPO. ArriVent, which is based in Newtown Square, Pennsylvania, has rights to develop MRG007 for all indications outside of greater China, where Lepu retains rights. Lepu could receive up to $1.16 billion in milestone payments, plus royalties from sales of a commercialized product.
“Expanding our pipeline with MRG007 furthers our mission to develop novel medicines for cancers with high unmet needs worldwide and accelerates our ADC portfolio by adding a program which plans to enter the clinic in the near-term,” Arrivent Chairman and CEO Bing Yao said in a prepared statement. “We look forward to collaborating with Lepu Biopharma in advancing this program globally.”
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