Spevatamig (PT886) as Monotherapy or in Combination With Chemo and/or ICI, for the Treatment of Patients With Advanced Gastric, Gastroesophageal Junction, Pancreatic Ductal or Biliary Tract Carcinomas (the TWINPEAK Study)

Summary

This is a first-in-human, Phase 1/2, open-label, dose escalation and dose expansion and combination study designed to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary efficacy of Spevatamig (PT886). Patients with the following tumor types will be eligible for screening: unresectable or metastatic gastric adenocarcinoma, gastroesophageal junction (GEJ) adenocarcinoma, biliary tract carcinoma (BTC) and pancreatic ductal adenocarcinoma (PDAC).

Eligibility

Key Inclusion Criteria

1. 18 years or older and able to sign informed consent and comply with the protocol.
2. Measurable disease as defined by RECIST V1.1 criteria for solid tumors.
3. 3\. Part A and Part B: Histologically or cytologically confirmed unresectable advanced or metastatic solid gastric, gastroesophageal junction (GEJ), biliary tract or pancreatic carcinomas previously treated for advanced (metastatic or unresectable) disease or for which treatment is not available or not tolerated.

   Part C, substudy C1: 2L m/a GC/GEJ-C patients will receive Spevatamig (PT886) in combination with Paclitaxel. Patients who are HER2 positive are eligible.

   Part C, substudy C2: 1L m/a PDAC patients will receive Spevatamig (PT886) in combination with Gemcitabine plus nab-Paclitaxel (Abraxane).

   Part C, substudy C3: 1L m/a PDAC patients will receive Spevatamig (PT886) in combination with Gemcitabine plus FOLFIRINOX/mFFX.

   Part C, substudy C4: Patients with m/a BTC who have progressed on 1L SOC chemotherapy (GemCis) ± ICI and are eligible for 2L SOC FOLFOX treatment.

   Part D, substudy D3: 2L or 3L m/a GC/GEJ-C patients will receive Spevatamig (PT886) in combination with KEYTRUDA® (pembrolizumab).

   Part D, substudy D4: 1L HER2 negative m/a GC/GEJ-C patients will receive Spevatamig (PT886) in combination with SOC chemotherapy and KEYTRUDA® (pembrolizumab).
4. Able to provide a formalin fixed, paraffin embedded (FFPE) tumor tissue sample (preferably fresh biopsy or if not possible, archival tissue) to be assessed for CLDN18.2 expression and other biomarkers.
5. ECOG performance status of 0 or 1.
6. Adequate organ function confirmed at screening and within 72 hours of initiating treatment.

Key Exclusion Criteria

Patients are excluded from the study if any of the following criteria apply:

1. Women who are pregnant or lactating.
2. Women of child-bearing potential (WOCBP) who do not use adequate birth control.
3. Has an active autoimmune disease that has required systemic treatment in the past 2 years.
4. Prior CLDN18.2 or CD47 targeting therapies, or SIRPα (signal regulatory protein alpha) targeting agents.

Additional inclusion and exclusion criteria will apply.

Conditions4

Interventions12

Locations11 sites

Find trials near these locations

Related trials

• Bioequivalence Study of Paclitaxel Protein-bound Particles for Injectable Suspension (Albumin-bound) in Breast Cancer Patients — CSPC Zhongnuo Pharmaceutical (Shijiazhuang) Co., Ltd.
• Combination of CAR-DC Vaccine and ICIs in Malignant Tumors — Chinese PLA General Hospital
• Neoadjuvant Study of HIFU With or Without PD-1 Inhibitors Followed by Abraxane Plus Carboplatin in Triple-Negative Breast Cancer. — The First Affiliated Hospital with Nanjing Medical University
• Phase II Trial of Albumin-Bound Paclitaxel Combined With Nedaplatin (TP) Via Hepatic Arterial Infusion for Advanced Breast Cancer Patients With Liver Metastases After Failure of Standard Therapy — Zhejiang Cancer Hospital
• Prospective Trial Assessing Real World Outcomes Response to Pembro in Black Patients w/ NSCLC — H. Lee Moffitt Cancer Center and Research Institute
• Involved-field Radiotherapy-TNT Combined With PD-1 Inhibitor for pMMR Locally Advanced Rectal Cancer (Neo-Field I) — Hebei Medical University Fourth Hospital
• Neoadjuvant CAPOX With or Without Pucotenlimab Plus Selective Radiotherapy for Locally Advanced Rectal Cancer — Sun Yat-sen University
• PD1/TGFβ In Combination With SHR2554 or Apatinib And Chemotherapy For First - Line Treatment Of Gastric Cancer — The First Affiliated Hospital of Zhengzhou University

Browse More Trials