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Table 2 Summary of agents with potential to overcome acquired resistance to immune checkpoint inhibitors

From: Overcoming acquired resistance to cancer immune checkpoint therapy: potential strategies based on molecular mechanisms

Category

Agent

Target

combinational therapies

Tumor type (s)

Phase

References

Targeting neoantigen depletion

Neo-PV-01

Personalized neoantigen-based vaccine

Nivolumab

Melanoma

NSCLC

Bladder Cancer

Phase Ib

(NCT02897765)

[98]

ISA 101

Synthetic long-peptide HPV-16 vaccine

Nivolumab

HPV-16-positive cancer

Phase II

(NCT02426892)

[99]

T-VEC

Oncolytic virus

Pembrolizumab

Melanoma

Phase Ib

(NCT02263508)

[102]

T-VEC

Oncolytic virus

Ipilimumab

Melanoma

Phase II

(NCT01740297)

[103]

T-VEC

Oncolytic virus

Ipilimumab; Nivolumab;

Pembrolizumab

Melanoma

Retrospective

[104]

Targeting defects in antigen processing and presentation

LCL161

The cIAP1/2 antagonist

Anti-PD-L1 and/or anti-CTLA4

Pancreatic ductal adenocarcinoma

Preclinical

 

Trametinib

The mall molecule MEK inhibitor

Anti-PD-L1

HNSCC

Preclinical

[106]

Chloroquine

Inhibiting autophagy

Anti-PD1 and anti-CTLA4

PDAC

Preclinical

[107]

ASPIRE nanovaccine

Specific pMHC-I, anti-PD1 antibody and B7 are simultaneously anchored by a programmed process

NA

Melanoma

Colon carcinoma

Lewis lung carcinoma

Preclinical

[108]

Targeting IFN‐γ/JAK signaling pathway

BO-112

A nanoplexed formulation of Poly I: C coupled to polyethylenimine

Anti-PD-L1

Melanoma

Preclinical

[110]

BO-112

A nanoplexed formulation of Poly I: C coupled to polyethylenimine

Pembrolizumab; Nivolumab

Solid tumor

Phase I (NCT02828098)

[111]

Overexpression of NLRC5

Upexpressing NLRC5

ACT

Melanoma

Preclinical

[112]

Targeting alternate ICI activation

F38-2E2

Anti-TIM-3 antibody

Nivolumab

Lung cancer

Preclinical

[55]

Ieramilimab

The LAG-3 inhibitor

Spartalizumab

Advanced malignancies

Phase I/II (NCT02460224)

[115]

MIH63

Anti-VISTA antibody

Anti-PD-1 and anti-CTLA-4

Squamous cell carcinoma

Preclinical

[116]

Anti-murine BTLA antibody

Anti-BTLA antibody

Anti-PD-1

Glioblastoma

Preclinical

[117]

Tiragolumab

Anti-TIGIT antibody

Atezolizumab

NSCLC

Phase II

(NCT03563716)

[118]

Targeting suppressive tumor microenvironment

anti-CD25 antibody

Anti-CD25 antibody

Anti-PD-1

Sarcoma, colon adenocarcinoma, melanoma, and colorectal carcinoma

Preclinical

[119]

Mogamulizumab

Anti-CCR4 antibody

Nivolumab

Solid tumors

Phase I (NCT02476123)

[121]

PLX3397

CSF-1R kinase inhibitor

Oncolytic viruses, and anti-PD-1

Colon cancer

Preclinical

[123]

BLZ945

CSF-1R kinase inhibitor

Anti-PD-1

and anti-PD-L1

Control spontaneous neuroblastoma

Preclinical

[124]

ATRA

Targeting MDSCs

Anti-PD-1

NSCLC

Preclinical

[125]

ATRA

Targeting MDSCs

Ipilimumab

Melanoma

Phase II (NCT02403778)

[126]

BMS-211

Targeting MDSCs

anti-CTLA-4

Lung carcinoma, colon carcinoma, breast carcinoma and lymphoma

Preclinical

[127]

Epacadostat

The IDO1 enzyme inhibitor

Pembrolizumab

Solid tumors

Phase I/II (NCT02178722)

[128]

Epacadostat

The IDO1 enzyme inhibitor

Pembrolizumab

Melanoma

Phase III

(NCT02752074)

[129]

Linrodostat mesylate

The IDO1 enzyme inhibitor

Nivolumab

Bladder cancer

Phase I/II (NCT02658890)

[130]

CD39 knockout

Blocking CD39

anti-PD1

HCC

Preclinical

[131]

Oleclumab

Anti-CD73 monoclonal antibody

Durvalumab

NSCLC

Phase II

(NCT05221840)

[132]

NIR178

The A2AR antagonist

Immunotherapy

NSCLC

Phase II

(NCT02403193)

[133]

TGFβ-blocking

Inhibiting TGFβ

Anti-PD-L1

Urothelial cancer

Preclinical

[134]

Mithramycin

 

Anti-PD-L1

Chronic lymphocytic leukemia

Preclinical

[135]

Pegilodecakin

The PEGylated form of IL10

Pembrolizumab or nivolumab

Solid tumors

Phase IB (NCT02009449)

[136]

Targeting epigenetic modification

Decitabine

The DNMT inhibitor

anti-CTLA-4

Ovarian Cancer

Preclinical

[142]

Azacitidine

The DNMT inhibitor

Nivolumab

Acute Myeloid Leukemia

Phase II (NCT02397720)

[148]

Panobinostat

The HDAC inhibitor

Anti-PD-L1

Melanoma

Preclinical

[143]

Romidepsin

The HDAC inhibitor

Anti-PD-L1

Lung Adenocarcinoma

Preclinical

[144]

HBI-8000

The HDAC inhibitor

PD-1, PD-L1, or CTLA-4,

Colon carcinoma and B-cell lymphoma

Preclinical

[145]

Vorinostat

The HDAC inhibitor

Pembrolizumab

NSCLC

Phase I/Ib (NCT02638090)

[149]

Entinostat,

The HDAC inhibitor

Pembrolizumab

Melanoma

Phase Ib/II

NCT02437136

[150]

Entinostat

The HDAC inhibitor

Pembrolizumab

NSCLC

Phase Ib/II

NCT02437136

[151]

GSK503

The EZH2 inhibitor

Anti-PD1, anti-CTLA-4 and IL-2

Melanoma

Preclinical

[146]

Targeting gut microbiome Dysbiosis

Bifidobacterium

Regulating gut microbiota

Anti-PD-L1

Melanoma

Preclinical

[153]

Bacteroides fragilis

Regulating gut microbiota

Anti-CTLA-4

Melanoma

Preclinical

[94]

Lactobacillus johnsonii, Bifidobacterium pseudolongum, and Olsenella

Regulating gut microbiota

Anti-CTLA-4

Colorectal cancer, bladder cancer, and melanoma

Preclinical

[154]

EDP1503

Regulating gut microbiota

Pembrolizumab

Solid tumors

Phase I/II (NCT03775850)

[155]

MRx0518

Regulating gut microbiota

Pembrolizumab

Bladder cancer, NSCLC, RCC, and Melanoma

Phase I/II (NCT03637803)

[156]

FMT

Regulating gut microbiota

Anti-PD-1

Epithelial tumors

Preclinical

[89]

FMT

Regulating gut microbiota

Nivolumab

Melanoma

Phase I

NCT03353402

[157]

FMT

Regulating gut microbiota

Pembrolizumab

Melanoma

Phase II

NCT03341143

[158]

Other emerging combination strategies

STING-LNP

Stimulating the STING pathway

Anti-PD-1

Melanoma

Preclinical

[159]

MUSIC platform

Stimulating the STING pathway

Anti-PD-1

Breast cancer

Preclinical

[160]

iTPNCs

Activating inflammatory signaling

Anti-CTLA-4

Melanoma, colon cancer, and breast cancer

Preclinical

[161]

177Lu-PSMA-617

Delivering beta-particle radiation

Pembrolizumab

Prostate cancer

Phase II

NCT03805594

[162]

BNT111

RNA vaccine

Anti-PD-1

Melanoma

Preclinical

[163]

 

8FNs

Nanovaccine

Anti-PD-1

Melanoma

Preclinical

[164]