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Table 1 Baseline characteristics of studies included in the network meta-analysis

From: Discontinuation risk from adverse events: immunotherapy alone vs. combined with chemotherapy: a systematic review and network meta-analysis

Study (First author, year)

Indication

Treatment group

IO agents

Number of patients in safety analysis

Reported outcomesa

Median follow-up duration (months)

ASTRUM-005 [36] (Cheng Y, 2022)

SCLC

Chemo-IO

Serplulimab

389

TRAE

12.3

Chemo-only

NA

196

12.3

ASTRUM-007 [37] (Song Y, 2023)

ESCC

Chemo-IO

Serplulimab

382

TRAE, TEAE

14.9

Chemo-only

NA

168

14.9

ATTRACTION-4 [38] (Kang YK, 2022)

GI cancer

Chemo-IO

Nivolumab

359

TRAE

11.6

Chemo-only

NA

358

11.6

CameL [39] (Zhou C, 2021)

NSCLC

Chemo-IO

Camrelizumab

205

TRAE

11.9

Chemo-only

NA

207

11.9

CameL-Sq [40] (Ren S, 2022)

NSCLC

Chemo-IO

Camrelizumab

193

TRAE

13.5

Chemo-only

NA

196

11.6

CAPSTONE-1 [41] (Wang J, 2022)

SCLC

Chemo-IO

Adebrelimab

230

TRAE

13.5

Chemo-only

NA

232

13.5

CAPTAIN-1st [42] (Yang Y, 2021)

NPC

Chemo-IO

Camrelizumab

134

TRAE, anyAE

15.6

Chemo-only

NA

129

15.6

Checkmate 227 [43] (Hellmann MD, 2018)

NSCLC

dual-IO

Nivolumab, Ipilimumab

576

TRAE

11.2b

mono-IO

Nivolumab

391

11.2b

Chemo-only

NA

570

11.2b

Checkmate 648 [44] (Doki Y, 2022)

ESCC

dual-IO

Nivolumab, Ipilimumab

322

TRAE

13b

Chemo-IO

Nivolumab

310

13b

Chemo-only

NA

304

13b

Checkmate 649 [45] (Janjigian YY, 2021)

GI cancer

Chemo-IO

Nivolumab

782

TRAE

13.1

Chemo-only

NA

767

11.1

Checkmate 743 [46] (Baas P, 2021)

Pleural mesothelioma

dual-IO

Nivolumab, Ipilimumab

300

TRAE

29.7

Chemo-only

NA

284

29.7

Checkmate 9LA [47] (Paz-Ares L, 2021)

NSCLC

dual-IO

Nivolumab, Ipilimumab

358

TRAE

9.7

Chemo-only

NA

349

9.7

DANUBE [48] (Powles T, 2020)

MIBC

mono-IO

Durvalumab

345

TRAE, anyAE

41.2

dual-IO

Durvalumab, Tremelimumab

340

41.2

Chemo-only

NA

313

41.2

EMPOWER-Lung 3, Part 2 [49] (Gogishvili M, 2022)

NSCLC

Chemo-IO

Cemiplimab

312

TRAE

16.3

Chemo-only

NA

153

16.7

ESCORT 1st [50] (Luo H, 2021)

ESCC

Chemo-IO

Camrelizumab

298

TRAE

10.8

Chemo-only

NA

297

10.8

GEMSTONE-302 [51] (Zhou C, 2022)

NSCLC

Chemo-IO

Sugemalimab

320

TRAE

17.8

Chemo-only

NA

159

17.8

HIMALAYA [52] (Abou-Alfa GK, 2022)

HCC

mono-IO

Durvalumab

388

TRAE

32.6

dual-IOc

Durvalumab, Tremelimumab

540

33.2

JAVELIN Ovarian 100 [53] (Monk BJ, 2021)

Ovarian cancer

Chemo-IO

Avelumab

329

TRAE

12.6

Chemo

Chemo

334

11.8

KESTREL [54] (Psyrri A, 2023)

HNSCC

mono-IO

Durvalumab

202

TRAE

NA

dual-IO

Durvalumab.

Tremelimumab

408

NA

KEYNOTE-024 [55] (Reck M, 2016)

NSCLC

mono-IO

Pembrolizumab

154

TRAE

11.2

Chemo-only

NA

150

11.2

KEYNOTE-042 [56] (Mok TSK, 2019)

NSCLC

mono-IO

Pembrolizumab

636

TRAE

12.8

Chemo-only

NA

615

12.8

KEYNOTE-062 [57] (Shitara K, 2020)

GI cancer

mono-IO

Pembrolizumab

254

TRAE

29.4

Chemo-IO

Pembrolizumab

250

29.4

Chemo-only

NA

244

29.4

KEYNOTE-966 [58] (Kelley RK, 2023)

BTC

Chemo-IO

Pembrolizumab

529

TRAE

25.6

Chemo-only

NA

534

25.6

MYSTIC [59] (Rizvi NA, 2020)

NSCLC

mono-IO

Durvalumab

369

TRAE

30.2

dual-IO

Durvalumab, Tremelimumab

371

30.2

Chemo-only

NA

352

30.2

NEPTUNE [60] (de Castro G, 2023)

NSCLC

dual-IO

Durvalumab, Tremelimumab

410

TRAE

32.9

Chemo-only

NA

399

32.9

ORIENT-15 [61] (Lu Z, 2022)

ESCC

Chemo-IO

Sintilimab

327

TRAE, TEAE

16.0

Chemo-only

NA

332

16.9

Poseidon [62] (Johnson ML, 2023)

NSCLC

Chemo-dual-IO

Durvalumab, Tremelimumab

330

TRAE

15.5

Chemo-IO

Durvalumab

334

15.5

Chemo-only

NA

333

15.5

RATIONALE-306 [63] (Xu J, 2023)

ESCC

Chemo-IO

Tislelizumab

324

TRAE

16.3

Chemo-only

NA

321

9.8

TOPAZ-1 [64] (Oh DY, 2022)

BTC

Chemo-IO

Durvalumab

338

TRAE, anyAE

16.8

Chemo-only

NA

342

15.9

  1. aTypes of AEs leading to treatment discontinuation
  2. bOnly reported minimum duration of follow-up
  3. cTwo arms using the same ICI agents with different strategies combined
  4. Abbreviations: AE, adverse event; BTC, biliary tract cancer; Chemo-dual-IO, dual-immunotherapy combined with chemotherapy; Chemo-IO, mono-immunotherapy combined with chemotherapy; Chemo-only, chemotherapy alone; dual-IO, dual-immunotherapy; ESCC, esophageal squamous cell carcinoma; GI, gastrointestinal; HCC, hepatocellular carcinoma; HNSCC, head and neck squamous cell carcinoma; IO, immunotherapy; MIBC, muscle invasive bladder cancer; mono-IO, mono-immunotherapy; NA, not applicable; NPC, nasopharyngeal carcinoma; NSCLC, non-small cell lung cancer; SCLC, small cell lung cancer; TEAE, treatment emergent adverse event; TRAE, treatment-related adverse event;