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. 2021 Sep 30;9(9):e002472. doi: 10.1136/jitc-2021-002472

Table 1.

Baseline characteristics

Characteristic N %
Median age, years (range) 64 (34–80)
Sex
 Male 39 79.6
 Female 10 20.4
Race
 White 44 89.8
 Black or African American 2 4.1
 Asian 1 2.0
 Other 1 2.0
 More than one race 1 2.0
ECOG performance status
 0 13 26.5
 1 36 73.5
Histology at baseline
 Squamous cell carcinoma 10 20.4
 Adenocarcinoma (including one adenosquamous) 39 79.6
Metastatic disease
 Yes 45 91.8
 No 4 8.2
Prior radiation therapy
 Received 33 67.3
 Not received (or unknown) 16 32.7
Prior lines of therapy
 0 0 0.0
 1 10 20.4
 2 13 26.5
 3 9 18.4
 4 8 16.3
 ≥5 7 14.3
 Missing 2 4.1
HER2 (EAC only)
 Negative 29 74.4
 Positive 9 23.1
 Unknown 1 2.
MMR status
 MMR proficient 9 18.4
 MLH1 proficient, not tested otherwise 1 2.0
 MMR deficient 1 2.0
 Unknown 38 77.6

ECOG, Eastern Cooperative Oncology Group; MMR, mismatch repair.