Exhibit 99.1
Adaptimmune Reports Increased Response Rate and Durability of Response in its Phase 1 SURPASS trial; ORR now 52% across Ovarian, Urothelial, and Head & Neck Cancers
- New responses in ovarian and urothelial cancers increase ORR to 52% from 44% in heavily pre-treated patients with late-stage ovarian, urothelial, and head & neck cancers after single dose of ADP-A2M4CD8 -
- Across the entire ongoing Phase 1 SURPASS trial, the ORR has increased to 37% from 33%, and the median duration of response has increased to ~20 weeks from ~12 weeks since last update -
- Increased ORR now 43% in ovarian cancer with one new response; Initiating Phase 2 trial (SURPASS-3) in ovarian cancer for ADP-A2M4CD8 in monotherapy and in combination with a checkpoint inhibitor -
- The Company recently received FDA RMAT Designation for ADP-A2M4CD8 for the treatment of patients with platinum resistant ovarian cancer -
- Increased ORR now 57% in urothelial cancer with one new complete response; new cohort in Phase 1 SURPASS trial planned to evaluate ADP-A2M4CD8 in combination with a checkpoint inhibitor in the second line setting in urothelial cancers –
- Adaptimmune also plans to add a further cohort to the Phase 1 SURPASS trial to evaluate ADP--A2M4CD8 in combination with first-line standard of care (pembrolizumab) in head & neck cancer -
PHILADELPHIA, PA. and OXFORD, UK, November 8, 2022 – Adaptimmune Therapeutics plc (Nasdaq: ADAP), a leader in cell therapy to treat cancer, today reports updated clinical data from its MAGE-A4 franchise. Clinical data continue to support the potential of Adaptimmune’s engineered T-cell therapies for people with cancer across multiple solid tumor indications. The company will provide further details on a call to be held today, November 8, 2022, at 8:00 a.m. EST (1:00 p.m. GMT) during which management will be available for Q&A.
“The data in the SURPASS trial continue to demonstrate the potential of our next-generation cell therapy targeting MAGE-A4 in a broad range of difficult-to-treat, late-stage solid tumors,” said Elliot Norry, Adaptimmune’s Chief Medical Officer. “We are initiating a Phase 2 trial, SURPASS-3, for people with ovarian cancer in collaboration with The GOG Foundation, Inc. I am pleased to announce that we recently received FDA RMAT Designation for ADP-A2M4CD8 for the treatment of patients with platinum resistant ovarian cancer. We also plan to gather data in urothelial and head & neck cancers with two additional cohorts that will focus on earlier lines of treatment. Finally, we will evaluate further development opportunities in the ongoing signal finding Phase 1 SURPASS trial in both monotherapy as well as in combination with the checkpoint inhibitor nivolumab.”
New positive data reported in the Phase 1 SURPASS trial
| ● | Since data were reported at ESMO in September, there have been additional clinical responses including a new complete response in urothelial cancer and one new response in ovarian cancer |
| ● | The objective response rate (ORR) has increased to 52% in heavily pre-treated patients with late -stage ovarian, urothelial, and head & neck cancers after a single dose of ADP-A2M4CD8 (ORR of 44% reported at ESMO) |