Skip to main content

Table 1 Overview of the main published studies on TMB quantification from gene panels

From: Tumor mutational burden quantification from targeted gene panels: major advancements and challenges

Reference

Gene panel (version)

Cancer type

Study design

Study ID

ICI

TMB cutoff (mut/Mb)

Method of TMB cutoff determination

TMB predictive value

Clinical outcome

N patients

Rosenberg, 2016 [5]

FM1 (v3)

urothelial carcinoma (metastatic or locally advanced)

trial (single-arm, phase 2)

NCT02108652

PD-(L)1

NA

NA

NA

ORR

315

Balar, 2017 [16]

FM1±

urothelial carcinoma (metastatic)

trial (single-arm, phase 2)

NCT02108652

PD-(L)1

Q3 (> = 16)

distribution

NA

OS

123

Powles, 2018 [15]

FM1±

urothelial carcinoma (metastatic)

trial (randomized, phase 3)

NCT02302807

PD-(L)1

Q2 (9.65)

distribution

NA

OS

931

Kowanetz, 2016 [27]

FM1 (v3)

NSCLC

trial (randomized, phase 2)

NCT01903993

PD-(L)1

Q1, Q2 (9.9), Q3

distribution

NA

PFS, OS, ORR

454

trial (single-arm, phase 2)

NCT02031458

trial (single-arm, phase 2)

NCT01846416

Gandara, 2018 [61] a

FM1 bTMB assay

NSCLC

trial (randomized, phase 2)

NCT01903993

PD-(L)1

> = 14

positive and negative percentage agreement with the orthogonally validated FM1

NA

PFS, OS

259

trial (randomized, phase 3)

NCT02008227

Hellmann, 2018 [50]

FM1 CDx

NSCLC

trial (randomized, phase 3)

NCT02477826

combo

> 10

based on NCT02659059

NA

PFS

1004

Rizvi, 2018 [42]

MSK-IMPACT (v1, v2, v3)

NSCLC

trial (randomized, phase 1)

NCT01295827

PD-(L)1

Q2 (7.4)

distribution

AUC = 0.601 (DCB)

DCB, PFS

240

Ready, 2019 [28]

FM1 CDx

NSCLC

trial (non-randomized, phase 2)

NCT02659059

combo

10

ROC

AUC (95% CI) = 0.73 (0.62–0.84); TPR (95% CI) = 0.78 (0.63–0.93); FPR (95% CI) = (0.62 (0.49–0.73)

ORR

98

Wang, 2019 [49] a

NCC-GP150

NSCLC

observational (cohort)

NA

PD-(L)1

6 (tot mut)

best cutoff from in silico analysis on Rizvi 2015 WES

NA

PFS, ORR

50

Johnson, 2016 [12]

FM1 (v2, v3)

melanoma

observational (retrospective)

NA

PD-(L)1

< 3.3, 3.3–23.1, > 23.1

ROC

NA

PFS, OS, ORR

65

Chalmers, 2017 [22]

FM1 (v1, v2, v3, v4), FM1 Heme

various locally advanced or metastatic solid tumors

observational (retrospective)

NA

NA

> 20

NA

NA

NA

102, 292

Goodman, 2017 [18]

FM1 (v1, v2, v3)

various locally advanced or metastatic solid tumors

observational (cohort, retrospective)

NCT02478931

PD-(L)1, CTLA-4, high-dose IL2 or combo

< 6, 6–19, > 19

Foundation Medicine official reports

NA

PFS, OS, ORR

151

Khagi, 2017 [44] a

Guardant360

various solid tumors

observational (cohort, retrospective)

NCT02478931

PD-(L)1, CTLA-4, combo or other

mean (> 3 VUS)

distribution

NA

PFS, OS, ORR

69

Zehir, 2017 [73]

MSK-IMPACT (v1, v2)

various primary and metastatic solid tumors

observational (cohort, prospective)

NCT01775072

NA

> 13.8

distribution (median TMB +  2 × IQR_TMB)

NA

NA

10, 945

Samstein 2019 [43]

MSK-IMPACT (v3)

bladder

observational (cohort, prospective)

NCT01775072

PD-(L)1, CTLA-4 or combo

17.6

distribution (top 20%)

NA

OS, PFS, DCB

214

breast

5.9

45

breast ER+

6.8

24

breast ER-

4.4

21

unknown primary

14.2

90

colorectal

52.2

110

esophagogastric

8.8

126

glioma

5.9

117

head and neck

10.3

138

melanoma

30.7

321

NSCLC

13.8

350

renal cell carcinoma

5.9

151

  1. ORR Objective Response Rates, DCB Durable Clinical Benefit, OS Overall Survival, PFS Progression-Free Survival, FM1 Foundation Medicine’s FoundationOne (v1: 185 genes, v2: 236 genes, v3: 315 genes, v4: 405 genes, Heme: 405 genes, CDx: 324 genes); ±: version not specified; MSK-IMPACT v1 341 genes, v2: 410 genes, v3 468 genes, NSCLC non-small cell lung cancer, ER Estrogen Receptor, VUS variants of unknown significance, PD-(L)1 anti-PD-1 or anti-PD-L1, CTLA-4 anti-CTLA-4, combo combined anti-PD-1/PD-L1 + anti-CTLA-4, Q1-Q4 quartiles, a: TMB quantification from blood
  2. Each study is described reporting gene panel, cancer type, study design, study ID (on ClinicalTrials.gov), immune checkpoint inhibitor treatment (ICI), proposed TMB cutoff, method for TMB cutoff determination, outcome analyzed to evaluate TMB clinical utility. AUC, TPR (True Positive Rate) and FPR (False Positive Rate) are provided, when available, as a measure of TMB predictive value for immunotherapy responder classification