Extended Data Table 4.

Melanoma biopsy sites and PD-L1(hi) status of melanoma cells from patients on clinical trial.

Recent biopsy was optional for enrollment on the clinical trial. Tumor tissue from all patients with recent biopsy was used. PD-L1 status was determined by examination of membrane staining on melanoma cells. PD-L1(hi) was classified as 2+ on at least 1% of cells. Patient ID 3 is patient PT-102, and patient ID 4 is patient PT-402.

ID	Location	PD-L1(hi)
2	Skin (presumed)	yes
3	Skin	yes
4	Bowel	no
7	Skin (presumed)	yes
8	Stomach	no
11	Liver	no
12	Lymph node	yes
13	Lymph node	no
15	Skin	no
17	Skin	no
18	Skin (presumed)	no
19	Bowel	no