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Table 1 Selected ongoing trials of ICI combined therapy for Solid cancer

From: Enhancing HCC Treatment: innovatively combining HDAC2 inhibitor with PD-1/PD-L1 inhibition

Condition or disease

Therapeutic regimen

Targets

Study

Phase

Total patient number

Recruitment Status

Primary Outcome Measures

Secondary Outcome Measures

Line of therapy

Relapsed/Refractory Non-Hodgkin lymphoma; Advanced solid tumors

Chidamide (HDACi)

+

Immune checkpoint inhibitors (anti-PD1/PD-L1/CTLA4 antibodies)

+

Decitabine (DNA methyltransferase inhibiotr)

HDAC1,2,3,10

NCT05320640 [87]

I/II

100

(estimated enrollment)

Recruiting

ORR;

AEs

DOR;

PFS

Subsequent-line

Cervical Cancer;

Cervix Cancer;

Cervix Neoplasm

Toripalimab (PD-1 inhibitor)

+

Chidamide (HDACi)

HDAC1,2,3,10

NCT04651127 [62]

I/II

40

(estimated enrollment)

Recruiting

Safety and tolerability;

ORR

PFS;

DOR;

DCR;

OS

Subsequent-line

Sophageal squamous cell cancer;

Adenocarcinoma of esophagogastric junction;

Gastric adenocarcinoma;

Unresectable, recurrent or metastatic disease

Chidamide (HDACi)

+

PD-1 inhibitor (Toripalimab)

HDAC1,2,3,10

NCT05163483 [63]

II

87

(estimated enrollment)

Recruiting

ORR

PFS;

DOR;

DCR;

OS

Subsequent-line

Solid tumors that are metastatic or cannot be removed by surgery or locally advanced or metastatic HER2-negative breast cancer

Entinostat (HDACi)

+

Nivolumab and/or Ipilimumab

Class I HDAC

NCT02453620 [88]

I

57

Recruiting

AEs

ORR

PFS;

DOR

Subsequent-line

Advanced or metastatic non-small cell lung cancer with PD-L1 expression of ≥ 1%

HBI-8000

(HDACi)

+

Pembrolizumab

Class I HDAC

NCT05141357 [89]

II

24

(estimated enrollment)

Active, not recruiting

ORR

DOR;

DCR;

PFS;

Safety and tolerability

Subsequent-line

(No prior treatment with checkpoint inhibitors or more than one regimen of chemotherapy including epidermal growth factor receptor (EGFR) or anaplastic lymphoma kinase (ALK) mutation directed therapy for advanced or metastatic disease)

NSCLC;

Melanoma;

Mismatch-repair proficient colorectal cancer

Entinostat

+

Pembrolizumab

Class I HDAC

NCT02437136 [90]

I/II

202

Recruiting

Safety and Tolerability;

AEs;

ORR

CBR;

PFS;

OS;

DOR;

TTR

Subsequent-line

Children and adolescents with high risk refractory/relapsed/progressive tumors (CNS Tumor

, Solid Tumor)

Entinostat

+

Nivolumab

Class I HDAC

NCT03838042 [91]

I/II

128

(estimated enrollment)

Recruiting

DLT;

Best response (CR or PR)

DOR;

DCR;

SD;

PFS, etc.

Subsequent-line

  1. Abbreviation: HDACi, HDAC inhibitor; CNS tumors, central nervous system tumors; NSCLC, non-small cell lung cancer; ORR, objective response rate; OS, overall survival; PFS, progression free survival; DOR, duration of response; DCR, disease control rate; DLTs, incidence of dose limiting toxicities; AEs, incidence of adverse events; CBR, clinical benefit rate; TTR, time to response; DLT, dose limiting toxicity; RECIST 1.1, response evaluation criteria in solid tumors 1.1