{"entity":{"id":"js105","kind":"drug","name":"JS105","aka":[],"tldr":"JS105 is an experimental small-molecule drug from Risen (Suzhou) Pharma Tech in phase 3 trials for HR-positive / HER2-negative breast cancer, with its target not yet stated publicly.","summary":"JS105 is a small-molecule drug developed by Risen (Suzhou) Pharma Tech. Its molecular target is not stated in the ClinicalTrials.gov intervention record, and OnCo has not confirmed one from the sponsor's pipeline page. ClinicalTrials.gov describes the intervention as: Patients will receive oral JS105 on Days 1-28 of each 4-week cycle. It is the investigational product in 2 recruiting or active industry-led phase 2 and phase 3 interventional cancer trials, including the phase 3 study NCT07207070 (A Randomised, Open-label, Multicentre Phase III Clinical Study to Evaluate the Efficacy and Safety of JS105 Combined With Dalpiciclib and Fulvestrant Compared With Dalpiciclib and Fulvestrant in Patients With PIK3CA-mutated, HR-positive, HER2-negative Recurrent or Metastatic Breast Cancer), in HR-positive / HER2-negative breast cancer. The largest, NCT07207070, plans to enrol 312 participants with primary completion expected 2029-05-31. Status reflects the highest phase registered on ClinicalTrials.gov; no efficacy results are recorded here.","status":"phase-3","asOf":"2026-09-11","links":[{"label":"ClinicalTrials.gov: trials of JS105","url":"https://clinicaltrials.gov/search?intr=JS105"}],"tags":["pipeline","ctgov-ingest"],"related":[],"cancers":["breast-hr-positive"],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":["junshi"],"institutions":[],"pathways":[],"terms":[],"trials":["nct07207070"],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"provenance":{"editedBy":"OnCo ingestion (ClinicalTrials.gov v2 + sponsor pipeline pages)","editedOn":"2026-09-11"},"modality":"small molecule (structure undisclosed or not yet in PubChem)","mechanism":"Mechanism not stated in the ClinicalTrials.gov record or on the sponsor's pipeline page.","approvals":[],"mechanismSteps":[],"toxicity":[],"access":[],"regulatoryEvents":[]},"route":"/drugs/js105/","neighbours":{"cancer":[{"id":"breast-hr-positive","kind":"cancer","name":"HR-positive / HER2-negative breast cancer","route":"/cancers/breast-hr-positive/"}],"company":[{"id":"junshi","kind":"company","name":"Shanghai Junshi Biosciences","route":"/companies/junshi/"}],"trial":[{"id":"nct06208410","kind":"trial","name":"A Clinical Study of JS105 in Combination With Other Anti-tumor Therapies in Patients With Solid Tumors","route":"/trials/nct06208410/"},{"id":"nct07207070","kind":"trial","name":"A Randomised, Open-label, Multicentre Phase III Clinical Study to Evaluate the Efficacy and Safety of JS105 Combined With Dalpiciclib and Fulvestrant Compared With Dalpiciclib and Fulvestrant in Patients With PIK3CA-mutated, HR-positive, HER2-negative Recurrent or Metastatic Breast Cancer","route":"/trials/nct07207070/"}]}}