A Study to Evaluate the Safety and Therapeutic Activity of GI-102 As a Single Agent and in Combination with Conventional Anti-cancer Drugs, Pembrolizumab or Trastuzumab Deruxtecan(T-DXd) in Patients with Advanced Solid Tumors (KEYNOTE-G08)

0.12 mg/kg, 0.24 mg/kg or Recommended phase 2 dose of GI-102 will be administered via SC injection Q3W up to 2 years (approximately 35 years).

Dose level will be escalated from 0.06 mg/kg to 0.45 mg/kg and Recommended phase 2 dose (or RP2D-1, RP2D+1) of GI-102 will be administered via IV infusion Q3W up to 2 years (approximately 35 years).

Doxorubicin will be administered intravenously at a dose of 75 mg/m2 on Day 3 every 3-week (21-day) cycle for up to 6 cycles.

Paclitaxel will be administered intravenously over 1 hour at a dose of 80 mg/m2 each time weekly as a diluted solution according to the prescribing information.

Bevacizumab will be administered intravenously at a dose of 10 mg/kg every 2 weeks.

Eribulin will be administered intravenously at a dose of over 1.4 mg/m2 over 2 to 5 minutes on Days 3 and 10 every 3-week (21-day) cycle.

T-DXd will be administered initially as a 5.4 mg/kg (or 6.4 mg/kg only for gastric cancer) IV over 30 - 90 minutes every 3 weeks.

pembrolizumab will be administered at a dose of 200 mg as IV infusion Q3W.

Recommended phase 2 dose (or RP2D-1, RP2D-2) of GI-102 will be administered via IV infusion Q3W up to 2 years (approximately 35 years).