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. Author manuscript; available in PMC: 2018 Oct 30.
Published in final edited form as: Lancet Oncol. 2017 Jul 19;18(9):1182–1191. doi: 10.1016/S1470-2045(17)30422-9

Table 3:

Investigator-assessed objective response rate and disease control rate in biomarker-defined patient populations

Patients, n (%) dMMR/MSI-H per local assessment
(N=74)
Objective response rate Disease control for ≥12 weeks
Tumour PD-L1 expression
  ≥1% (n=21) 6 (28·6) 11 (52·4)
  <1% (n=47) 13 (27·7) 35 (74·5)
Immune cell PD-L1 expression
  Rare (n=24) 5 (20·8) 14 (58·3)
  Intermediate (n=21) 5 (23·8) 17 (81·0)
  Numerous (n=23) 9 (39·1) 15 (65·2)
Mutation status
  BRAF mutant (n=12) 3 (25·0) 9 (75·0)
  KRAS mutant (n=26) 7 (26·9) 16 (61·5)
BRAF/KRAS wild type (n=29) 12 (41·4) 23 (79.3)
Clinical history of Lynch syndrome*
  Yes (n=27) 9 (33·3) 19 (70·4)
  No (n=28) 8 (28·6) 21 (75·0)

dMMR/MSI-H=DNA mismatch repair deficient/microsatellite instability–high; PD-L1=programmed death-1 ligand 1.

*

Lynch syndrome designation was based on the clinical records of the patients at sites in countries where this reporting was permitted (excluded Italy).