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. 2018 Apr 9;53(11):1186–1195. doi: 10.1007/s00535-018-1464-0

Table 2.

Survival by univariate analysis

Characteristics (n) mPFS (95% CI) HR (95% CI) p values mOS (95% CI) HR (95% CI) p values
Median age (years) 0.373 0.124
 ≥ 68 (15) 9.0 (3.3–14.7) 1 (Reference) 18.0 (9.2–26.8) 1 (Reference)
 < 68 (13) 17.0 (9.2–24.8) 0.71 (0.32–1.56) NR 0.44 (0.15–1.30)
Gender 0.143 0.323
 Male (21) 10.0 (5.5–14.5) 1 (Reference) 22.0 (7.5–36.5) 1 (Reference)
 Female (7) 19.0 (0.0–39.5) 0.49 (0.18–1.33) NR 0.48 (0.11–2.14)
ECOG PS 0.865 0.936
 0 (16) 11.0 (5.1–16.9) 1 (Reference) 24.0 (4.7–43.3) 1 (Reference)
 1–2 (12) 10.0 (1.5–18.5) 1.07 (0.48–2.39) 22.0 (3.6–40.4) 1.04 (0.37–2.94)
Tumor site 0.750 0.655
 GEJ (8) 13.0 (6.1–19.9) 1 (Reference) 33.0 (4.1–61.9) 1 (Reference)
 Stomach (20) 9.0 (0.2–17.8) 1.15 (0.48–2.73) 22.0 (9.6–34.4) 1.25 (0.41–4.08)
Differentiation 0.737 0.550
 Differentiated type (23) 11.0 (7.9–14.1) 1 (Reference) 24.0 (4.3–43.7) 1 (Reference)
 Undifferentiated type (5) 9.0 (2.6–15.4) 1.20 (0.40–3.58) 15.0 (10.7–19.3) 1.48 (0.40–5.48)
Visceral metastasis 0.116 0.271
 Yes (15) 8.0 (3.3–12.7) 1 (Reference) 15.0 (11.5–18.5) 1 (Reference)
 No (13) 13.0 (3.6–22.4) 0.54 (0.24–1.21) 33.0 (NA) 0.56 (0.20–1.60)
Adjuvant chemotherapy 0.856 0.702
 Yes (17) 11.0 (5.6–16.4) 1 (Reference) 33.0 (0.6–65.4) 1 (Reference)
 No (11) 10.0 (0.0–24.0) 0.93 (0.42–2.08) 22.0 (11.2–32.8) 1.22 (0.44–3.37)
Platinum-based
 Yes (25) 12.0 (8.3–15.7) 1 (Reference) 0.012 24.0 (5.1–42.9) 1 (Reference) 0.025
 No (3) 4.0 (NA) 4.69 (1.18–18.65) 11.0 (7.8–14.2) 5.64 (1.02–31.38)
HER2 status
 IHC 3+ (26) 11.0 (6.0–16.0) 1 (Reference) 0.283 22.0 (9.4–34.6) 1 (Reference) 0.273
 IHC 2+/FISH positive (2) 5.0 (NA) 2.17 (0.49–9.63) NR 0.04 (0.0–251.4)
HER2 heterogeneity
 Yes (14) 6.0 (2.3–9.7) 1 (Reference) <0.001 14.0 (11.9–16.1) 1 (Reference) 0.003
 No (14) 20.0 (17.8–22.2) 0.11 (0.03–0.41) NR 0.18 (0.06–0.61)
CEA
 ≥ 5.0 ng/ml (15) 6.0 (0.0–12.3) 1 (Reference) 0.659 22.0 (8.6–35.4) 1 (Reference) 0.804
 < 5.0 ng/ml (13) 12.0 (5.0–19.1) 0.84 (0.38–1.85) 24.0 (1.2–46.9) 0.88 (0.32–2.43)
CA 19-9
 ≥ 37.0 U/ml (13) 8.0 (2.4––13.6) 1 (Reference) 0.627 18.0 (9.9–26.1) 1 (Reference) 0.641
 < 37.0 U/ml (15) 11.0 (2.2–19.8) 0.82 (0.37–1.81) 24.0 (NA) 0.64 (0.23–1.77)

GEJ gastroesophageal junction cancer, ECOG PS Eastern Cooperative Oncology Group Performance Status, HR hazard ratio, 95% CI 95% confidential interval, mPFS median progression-free survival, mOS median overall survival, NA not applicable, NR not reached, CEA carcinoembryonic antigen, CA 19-9 carbohydrate antigen 19-9