Our Pipeline at a glance

We have a proud legacy of turning breakthrough science into medicines and vaccines that save and improve lives around the world. We’re focused on discovering new solutions for today and the future. We’re grateful to the thousands of volunteers who participate in our clinical trials — making this all possible.

This table provides an overview of our late-stage clinical development programs and is updated quarterly. Updated April 30, 2025.

Download MSD Pipeline PDF

Our pipeline at a glance

50+

Programs in

Phase 2

30+

Programs in

Phase 3

5+

Programs

Under Review

Therapeutic area

Phase

Modality

Molecule Name Therapeutic Area
Potential Indications Status (i.e., Phase 2, 3, Under Review)
Modality

MK-1167

Alzheimer’s

(NCT06721156)

Therapeutic area: Neuroscience

Mechanism of Action: MK-1167 is an alpha-7 nicotinic acetylcholine receptor positive allosteric modulator.

MK-1167 is being developed under a collaboration with Neuphoria.

Modality: Small molecule

MK-1167

Mechanism of Action: MK-1167 is an alpha-7 nicotinic acetylcholine receptor positive allosteric modulator.

MK-1167 is being developed under a collaboration with Neuphoria.

Neuroscience
Alzheimer’s

(NCT06721156)

Small molecule

MK-3000

Diabetic macular edema

(BRUNELLO; NCT06571045)

Therapeutic area: Ophthalmology

Mechanism of Action: MK-3000 is an investigational tri-specific antibody that acts as an agonist of the Wingless-related integration site (Wnt) signaling pathway.

This program is in a Phase 2/3 study.

MK-3000 was acquired as part of the acquisition of Eyebiotech Limited (EyeBio).

Modality: Tri-specific antibody

MK-3000

Mechanism of Action: MK-3000 is an investigational tri-specific antibody that acts as an agonist of the Wingless-related integration site (Wnt) signaling pathway.

This program is in a Phase 2/3 study.

MK-3000 was acquired as part of the acquisition of Eyebiotech Limited (EyeBio).

Ophthalmology
Diabetic macular edema

(BRUNELLO; NCT06571045)

Tri-specific antibody

MK-1084

Non-small cell lung cancer

(NCT06345729)

Therapeutic area: Oncology

Mechanism of Action: MK-1084 is an investigational, oral selective KRAS G12C inhibitor.

MK-1084 is being developed in combination with Keytruda.

MK-1084 is being developed through a collaboration with Taiho Pharmaceutical Co. Ltd and Astex Pharmaceuticals (UK), a wholly owned subsidiary of Otsuka Pharmaceutical Co., Ltd.

Modality: Small molecule

MK-1084

Mechanism of Action: MK-1084 is an investigational, oral selective KRAS G12C inhibitor.

MK-1084 is being developed in combination with Keytruda.

MK-1084 is being developed through a collaboration with Taiho Pharmaceutical Co. Ltd and Astex Pharmaceuticals (UK), a wholly owned subsidiary of Otsuka Pharmaceutical Co., Ltd.

Oncology
Non-small cell lung cancer

(NCT06345729)

Small molecule

raludotatug deruxtecan
(MK-5909)

Bladder cancer

(REJOICE-PanTumor01; NCT06660654)

Biliary cancer

(REJOICE-GI01;  NCT06864169)

Cervical cancer

(REJOICE-PanTumor01; NCT06660654)

Colorectal cancer

(REJOICE-GI01;  NCT06864169)

Endometrial cancer

(REJOICE-PanTumor01; NCT06660654)

Gastric cancer

(REJOICE-GI01;  NCT06864169)

Ovarian cancer

(REJOICE-Ovarian01; NCT06161025)

Pancreatic cancer

(REJOICE-GI01;  NCT06864169)

Renal cell carcinoma

(REJOICE-PanTumor01; NCT06660654)

Small cell lung cancer

(KEYNOTE-B98, NCT04938817)

Therapeutic area: Oncology

Raludotatug deruxtecan is an investigational antibody-drug conjugate that consists of a humanized anti-CDH6 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Raludotatug deruxtecan is being developed in collaboration with Daiichi Sankyo.

Modality: Antibody-drug conjugate

raludotatug deruxtecan

(MK-5909)

Raludotatug deruxtecan is an investigational antibody-drug conjugate that consists of a humanized anti-CDH6 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Raludotatug deruxtecan is being developed in collaboration with Daiichi Sankyo.

Oncology
Bladder cancer

(REJOICE-PanTumor01; NCT06660654)

Biliary cancer

(REJOICE-GI01;  NCT06864169)

Cervical cancer

(REJOICE-PanTumor01; NCT06660654)

Colorectal cancer

(REJOICE-GI01;  NCT06864169)

Endometrial cancer

(REJOICE-PanTumor01; NCT06660654)

Gastric cancer

(REJOICE-GI01;  NCT06864169)

Ovarian cancer

(REJOICE-Ovarian01; NCT06161025)

Pancreatic cancer

(REJOICE-GI01;  NCT06864169)

Renal cell carcinoma

(REJOICE-PanTumor01; NCT06660654)

Small cell lung cancer

(KEYNOTE-B98, NCT04938817)

Antibody-drug conjugate

MK-8527

HIV-1 PrEP

(NCT06045507)

Therapeutic area: Antiviral

Mechanism of Action: MK-8527 is an investigational nucleoside reverse transcriptase translocation inhibitor (NRTTI) of HIV-1.

Modality: Small molecule

MK-8527

Mechanism of Action: MK-8527 is an investigational nucleoside reverse transcriptase translocation inhibitor (NRTTI) of HIV-1.

Antiviral
HIV-1 PrEP

(NCT06045507)

Small molecule

MK-6194

Lupus

(NCT06161116)

Vitiligo

(NCT06113328)

Therapeutic area: Immunology

Mechanism of Action: MK-6194 is an investigational IL-2 mutein.

MK-6194 was acquired as part of the acquisition of Pandion Therapeutics.

Modality: Therapeutic protein

MK-6194

Mechanism of Action: MK-6194 is an investigational IL-2 mutein.

MK-6194 was acquired as part of the acquisition of Pandion Therapeutics.

Immunology
Lupus

(NCT06161116)

Vitiligo

(NCT06113328)

Therapeutic protein

patritumab deruxtecan
(MK-1022)

Previously treated locally advanced or metastatic EGFR-mutated NSCLC
Under Review (US*)

(HERTHENA-Lung01; NCT04619004)

Non-small cell lung cancer (EU)

(HERTHENA-Lung02; NCT05338970)

Biliary tract cancer

(MK-1022-011; NCT06596694)

Bladder cancer

(HERTHENA-PanTumor01; NCT06172478)

Breast

(HERTHENA-Breast-03; NCT06797635, NCT06686394)

Cervical cancer

(HERTHENA-PanTumor01; NCT06172478)

Colorectal cancer

(NCT06596694)

Endometrial cancer

(HERTHENA-PanTumor01; NCT06172478)

Esophageal cancer

(HERTHENA-PanTumor01; NCT06172478)

Gastric cancer

(HERTHENA-PanTumor01; NCT06172478)

Hepatocellular carcinoma

(NCT06596694)

Head and neck squamous cell cancer

(HERTHENA-PanTumor01; NCT06172478)

Melanoma

(HERTHENA-PanTumor01; NCT06172478)

Ovarian cancer

(HERTHENA-PanTumor01; NCT06172478)

Pancreatic cancer

(HERTHENA-PanTumor01; NCT06172478)

Prostate cancer

(HERTHENA-PanTumor01; NCT06172478)

Therapeutic area: Oncology

Mechanism of Action: Patritumab deruxtecan is an investigational antibody-drug conjugate that consists of a fully human anti-HER3 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Patritumab deruxtecan is being developed in collaboration with Daiichi Sankyo.

*In June 2024, FDA issued a CRL for the BLA for patritumab deruxtecan. MSD is working with Daiichi Sankyo to address FDA feedback.

 

Modality: Antibody-drug conjugate

patritumab deruxtecan

(MK-1022)

Mechanism of Action: Patritumab deruxtecan is an investigational antibody-drug conjugate that consists of a fully human anti-HER3 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Patritumab deruxtecan is being developed in collaboration with Daiichi Sankyo.

*In June 2024, FDA issued a CRL for the BLA for patritumab deruxtecan. MSD is working with Daiichi Sankyo to address FDA feedback.

 

Oncology
Previously treated locally advanced or metastatic EGFR-mutated NSCLC

(HERTHENA-Lung01; NCT04619004)

Under review (US*)
Non-small cell lung cancer (EU)

(HERTHENA-Lung02; NCT05338970)

Biliary tract cancer

(MK-1022-011; NCT06596694)

Bladder cancer

(HERTHENA-PanTumor01; NCT06172478)

Breast

(HERTHENA-Breast-03; NCT06797635, NCT06686394)

Cervical cancer

(HERTHENA-PanTumor01; NCT06172478)

Colorectal cancer

(NCT06596694)

Endometrial cancer

(HERTHENA-PanTumor01; NCT06172478)

Esophageal cancer

(HERTHENA-PanTumor01; NCT06172478)

Gastric cancer

(HERTHENA-PanTumor01; NCT06172478)

Hepatocellular carcinoma

(NCT06596694)

Head and neck squamous cell cancer

(HERTHENA-PanTumor01; NCT06172478)

Melanoma

(HERTHENA-PanTumor01; NCT06172478)

Ovarian cancer

(HERTHENA-PanTumor01; NCT06172478)

Pancreatic cancer

(HERTHENA-PanTumor01; NCT06172478)

Prostate cancer

(HERTHENA-PanTumor01; NCT06172478)

Antibody-drug conjugate

ifinatamab deruxtecan (MK-2400)

Small cell lung cancer

(IDeate-Lung02; NCT06203210)

Esophageal cancer

(IDeate-Esophageal01; NCT06644781)

Biliary Tract Cancer

(IDeate-PanTumor02; NCT06330064)

Bladder cancer

(IDeate-PanTumor02;NCT06330064)

Breast cancer

(IDeate-PanTumor02; NCT06330064)

Cervical cancer

(IDeate-PanTumor02; NCT06330064)

Colorectal cancer

(IDeate-PanTumor02; NCT06330064)

Endometrial cancer

(IDeate-PanTumor02; NCT06330064)

Hepatocellular carcinoma

(IDeate-PanTumor02; NCT06330064)

Head and neck squamous cell carcinoma

(NCT06330064)

Melanoma

(IDeate-PanTumor02; NCT06330064)

Ovarian cancer

(IDeate-PanTumor02; NCT06330064)

Pancreatic cancer

(IDeate-PanTumor02; NCT06330064)

Therapeutic area: Oncology

Mechanism of Action: Ifinatamab deruxtecan is an investigational antibody-drug conjugate that consists of a humanized anti-B7-H3 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Ifinatamab deruxtecan is being developed in collaboration with Daiichi Sankyo.

Modality: Monoclonal antibody

ifinatamab deruxtecan (MK-2400)

Mechanism of Action: Ifinatamab deruxtecan is an investigational antibody-drug conjugate that consists of a humanized anti-B7-H3 IgG1 monoclonal antibody linked to a topoisomerase I inhibitor payload.

Ifinatamab deruxtecan is being developed in collaboration with Daiichi Sankyo.

Oncology
Small cell lung cancer

(IDeate-Lung02; NCT06203210)

Esophageal cancer

(IDeate-Esophageal01; NCT06644781)

Biliary Tract Cancer

(IDeate-PanTumor02; NCT06330064)

Bladder cancer

(IDeate-PanTumor02;NCT06330064)

Breast cancer

(IDeate-PanTumor02; NCT06330064)

Cervical cancer

(IDeate-PanTumor02; NCT06330064)

Colorectal cancer

(IDeate-PanTumor02; NCT06330064)

Endometrial cancer

(IDeate-PanTumor02; NCT06330064)

Hepatocellular carcinoma

(IDeate-PanTumor02; NCT06330064)

Head and neck squamous cell carcinoma

(NCT06330064)

Melanoma

(IDeate-PanTumor02; NCT06330064)

Ovarian cancer

(IDeate-PanTumor02; NCT06330064)

Pancreatic cancer

(IDeate-PanTumor02; NCT06330064)

Monoclonal antibody

tulisokibart
(MK-7240)

Crohn’s disease

(NCT06430801; NCT06651281)

Ulcerative colitis

(NCT06052059)

Systemic sclerosis

(NCT05270668)

Therapeutic area: Immunology

Mechanism of Action: Tulisokibart is an investigational humanized monoclonal antibody directed to tumor necrosis factor (TNF)-like ligand 1A (TL1A).

Tulisokibart was acquired as part of the acquisition of Prometheus Biosciences, Inc.

Modality: Monoclonal antibody

tulisokibart

(MK-7240)

Mechanism of Action: Tulisokibart is an investigational humanized monoclonal antibody directed to tumor necrosis factor (TNF)-like ligand 1A (TL1A).

Tulisokibart was acquired as part of the acquisition of Prometheus Biosciences, Inc.

Immunology
Crohn’s disease

(NCT06430801; NCT06651281)

Ulcerative colitis

(NCT06052059)

Systemic sclerosis

(NCT05270668)

Monoclonal antibody

bomedemstat
(MK-3543)

Myeloproliferative disorders

(NCT06079879; NCT06456346; NCT06351631)

Therapeutic area: Oncology

Mechanism of Action: Bomedemstat is an investigational lysine-specific demethylase-1 (LSD1) inhibitor.

Bomedemstat was acquired as part of the acquisition of Imago BioSciences, Inc.

Modality: Small molecule

bomedemstat

(MK-3543)

Mechanism of Action: Bomedemstat is an investigational lysine-specific demethylase-1 (LSD1) inhibitor.

Bomedemstat was acquired as part of the acquisition of Imago BioSciences, Inc.

Oncology
Myeloproliferative disorders

(NCT06079879; NCT06456346; NCT06351631)

Small molecule

subcutaneous pembrolizumab
(MK-3475A)

Previously approved solid tumors
Under Review (US, EU)

(NCT05722015; NCT06698042)

Cutaneous squamous cell carcinoma

(NCT06041802)

Hematological malignancies

(NCT06504394;NCT06099782)

Therapeutic area: Oncology

Mechanism of Action: Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

Modality: Monoclonal antibody fixed-dose combination

subcutaneous pembrolizumab

(MK-3475A)

Mechanism of Action: Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

Oncology
Previously approved solid tumors

(NCT05722015; NCT06698042)

Under review (US, EU)
Cutaneous squamous cell carcinoma

(NCT06041802)

Hematological malignancies

(NCT06504394;NCT06099782)

Monoclonal antibody fixed-dose combination

islatravir + lenacapavir
(MK-8591D)

HIV-1 infection

(ISLEND-1; NCT06630286, ISLEND-2; NCT06630299, NCT05052996)

Therapeutic area: Antiviral

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. Lenacapavir is an investigational, long-acting HIV-1 capsid inhibitor.

MK-8591D is on FDA partial clinical hold for higher doses of islatravir than those used in current clinical trials.

Islatravir is being developed under an with the Yamasa Corporation. The combination of islatravir and lenacapavir is being developed in a collaboration with Gilead Sciences, Inc.

Modality: Small molecule fixed-dose combination

islatravir + lenacapavir

(MK-8591D)

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. Lenacapavir is an investigational, long-acting HIV-1 capsid inhibitor.

MK-8591D is on FDA partial clinical hold for higher doses of islatravir than those used in current clinical trials.

Islatravir is being developed under an with the Yamasa Corporation. The combination of islatravir and lenacapavir is being developed in a collaboration with Gilead Sciences, Inc.

Antiviral
HIV-1 infection

(ISLEND-1; NCT06630286, ISLEND-2; NCT06630299, NCT05052996)

Small molecule fixed-dose combination

sacituzumab tirumotecan
(MK-2870)

Breast cancer

(NCT06312176; NCT06393374)

Cervical cancer

(TroFuse-020; NCT06459180)

Endometrial cancer

(NCT06132958)

Gastric cancer

(TroFuse-015;  NCT06356311)

NSCLC

(NCT06074588, NCT06170788;
NCT06422143; NCT06305754; TroFuse-019; NCT06312137)

Ovarian cancer

(TroFuse-022; NCT06824467)

Biliary tract cancer

(NCT06428409)

Bladder cancer

(TroFuse-027;  NCT06637423)

Colorectal cancer

(NCT06428409)

Neoplasm malignant

(NCT06788912)

Pancreatic cancer

(NCT06428409)

Therapeutic area: Oncology

Mechanism of Action: Sacituzumab tirumotecan is an investigational antibody-drug conjugate that consists of an antibody-targeting trophoblast cell-surface antigen 2 (TROP2) linked to a belotecan-derived payload.

Sacituzumab tirumotecan is being developed as monotherapy and/or in combination with KEYTRUDA.

Sacituzumab tirumotecan is being developed in collaboration with Sichuan Kelun-Biotech.

Modality: Antibody-drug conjugate

sacituzumab tirumotecan

(MK-2870)

Mechanism of Action: Sacituzumab tirumotecan is an investigational antibody-drug conjugate that consists of an antibody-targeting trophoblast cell-surface antigen 2 (TROP2) linked to a belotecan-derived payload.

Sacituzumab tirumotecan is being developed as monotherapy and/or in combination with KEYTRUDA.

Sacituzumab tirumotecan is being developed in collaboration with Sichuan Kelun-Biotech.

Oncology
Breast cancer

(NCT06312176; NCT06393374)

Cervical cancer

(TroFuse-020; NCT06459180)

Endometrial cancer

(NCT06132958)

Gastric cancer

(TroFuse-015;  NCT06356311)

NSCLC

(NCT06074588, NCT06170788;
NCT06422143; NCT06305754; TroFuse-019; NCT06312137)

Ovarian cancer

(TroFuse-022; NCT06824467)

Biliary tract cancer

(NCT06428409)

Bladder cancer

(TroFuse-027;  NCT06637423)

Colorectal cancer

(NCT06428409)

Neoplasm malignant

(NCT06788912)

Pancreatic cancer

(NCT06428409)

Antibody-drug conjugate

islatravir + doravirine
(MK-8591A)

HIV-1 infection

(MK-8591A-033; NCT04776252, ILLUMINATE SWITCH A; NCT04223778, ILLUMINATE NAIVE; NCT04233879, ILLUMINATE SWITCH B; NCT04223791, ILLUMINATE HTE; NCT04233216,
MK-8591A-051; NCT05631093,
MK-8591A-052; NCT05630755,
MK-8591A-053; NCT05705349,
MK-8591A-054; NCT05766501)

Therapeutic area: Antiviral

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. Doravirine is a pyridinone non-nucleoside reverse transcriptase translocation inhibitor of HIV-1.

MK-8591A is on FDA partial clinical hold for higher doses of islatravir than those used in current clinical trials.

Islatravir is being developed under an agreement with the Yamasa Corporation.

Modality: Small molecule fixed-dose combination

islatravir + doravirine

(MK-8591A)

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. Doravirine is a pyridinone non-nucleoside reverse transcriptase translocation inhibitor of HIV-1.

MK-8591A is on FDA partial clinical hold for higher doses of islatravir than those used in current clinical trials.

Islatravir is being developed under an agreement with the Yamasa Corporation.

Antiviral
HIV-1 infection

(MK-8591A-033; NCT04776252, ILLUMINATE SWITCH A; NCT04223778, ILLUMINATE NAIVE; NCT04233879, ILLUMINATE SWITCH B; NCT04223791, ILLUMINATE HTE; NCT04233216,
MK-8591A-051; NCT05631093,
MK-8591A-052; NCT05630755,
MK-8591A-053; NCT05705349,
MK-8591A-054; NCT05766501)

Small molecule fixed-dose combination

LYNPARZA®
(MK-7339)

Non-small cell lung cancer

(KEYLYNK-012; NCT04380636, KEYLYNK-008; NCT03976362, KEYLYNK-006; NCT03976323)

Small cell lung cancer

(KEYLYNK-013; NCT04624204)

Therapeutic area: Oncology

Mechanism of Action: Olaparib is an inhibitor of poly (ADP-ribose) polymerase (PARP) enzymes, including PARP1, PARP2, and PARP3.

LYNPARZA is being developed as a monotherapy and/or in combination with KEYTRUDA.

LYNPARZA is being developed in collaboration with AstraZeneca.

Modality: Small molecule

LYNPARZA®

(MK-7339)

Mechanism of Action: Olaparib is an inhibitor of poly (ADP-ribose) polymerase (PARP) enzymes, including PARP1, PARP2, and PARP3.

LYNPARZA is being developed as a monotherapy and/or in combination with KEYTRUDA.

LYNPARZA is being developed in collaboration with AstraZeneca.

Oncology
Non-small cell lung cancer

(KEYLYNK-012; NCT04380636, KEYLYNK-008; NCT03976362, KEYLYNK-006; NCT03976323)

Small cell lung cancer

(KEYLYNK-013; NCT04624204)

Small molecule

LENVIMA®
(MK-7902)

Esophageal cancer

(LEAP-014; NCT04949256)

Therapeutic area: Oncology

Mechanism of Action: Lenvatinib is a kinase inhibitor that inhibits the kinase activities of vascular endothelial growth factor (VEGF) receptors VEGFR1 (FLT1), VEGFR2 (KDR), and VEGFR3 (FLT4). Lenvatinib inhibits other kinases that have been implicated in pathogenic angiogenesis, tumor growth, and cancer progression in addition to their normal cellular functions, including fibroblast growth factor (FGF) receptors FGFR1, 2, 3, and 4; platelet derived growth factor receptor alpha (PDGFRα), KIT, and RET.

LENVIMA is being developed in combination with KEYTRUDA.

LENVIMA is being developed in collaboration with Eisai.

Modality: Small molecule

LENVIMA®

(MK-7902)

Mechanism of Action: Lenvatinib is a kinase inhibitor that inhibits the kinase activities of vascular endothelial growth factor (VEGF) receptors VEGFR1 (FLT1), VEGFR2 (KDR), and VEGFR3 (FLT4). Lenvatinib inhibits other kinases that have been implicated in pathogenic angiogenesis, tumor growth, and cancer progression in addition to their normal cellular functions, including fibroblast growth factor (FGF) receptors FGFR1, 2, 3, and 4; platelet derived growth factor receptor alpha (PDGFRα), KIT, and RET.

LENVIMA is being developed in combination with KEYTRUDA.

LENVIMA is being developed in collaboration with Eisai.

Oncology
Esophageal cancer

(LEAP-014; NCT04949256)

Small molecule

opevesostat
(MK-5684)

Prostate cancer

(OMAHA1; NCT06136624, OMAHA2a; NCT06136650)

Therapeutic area: Oncology

Mechanism of Action: Opevesostat is an investigational oral inhibitor of cytochrome P450 11A1.

Opevesostat is being developed in collaboration with Orion.

Modality: Small molecule

opevesostat

(MK-5684)

Mechanism of Action: Opevesostat is an investigational oral inhibitor of cytochrome P450 11A1.

Opevesostat is being developed in collaboration with Orion.

Oncology
Prostate cancer

(OMAHA1; NCT06136624, OMAHA2a; NCT06136650)

Small molecule

V181

Dengue fever virus

(NCT05507450)

Therapeutic area: Vaccines

Description: V181 is an investigational quadrivalent dengue vaccine.

Modality: Vaccine

V181

Description: V181 is an investigational quadrivalent dengue vaccine.

Vaccines
Dengue fever virus

(NCT05507450)

Vaccine

MK-5475

PH-COPD

(INSIGNIA-PH-COPD; NCT05612035)

Therapeutic area: Cardiovascular

Mechanism of Action: MK-5475 is an investigational stimulator of soluble Guanylate Cyclase (sGC).

Modality: Small molecule

MK-5475

Mechanism of Action: MK-5475 is an investigational stimulator of soluble Guanylate Cyclase (sGC).

Cardiovascular
PH-COPD

(INSIGNIA-PH-COPD; NCT05612035)

Small molecule

CAPVAXIVE™
(V116)

Pneumococcal, adult
Under Review (JPN)

(STRIDE-3; NCT05425732, STRIDE-4; NCT05464420, STRIDE-5; NCT05526716, STRIDE-6; NCT05420961, STRIDE-7; NCT05393037, STRIDE-8; NCT05696080, STRIDE-9; NCT05633992, STRIDE-10; NCT05569954)

Pneumococcal, child

(STRIDE-13; NCT06177912)

Therapeutic area: Vaccines

Description: V116 is a 21-valent pneumococcal conjugate vaccine.

Modality: Vaccine

CAPVAXIVE™

(V116)

Description: V116 is a 21-valent pneumococcal conjugate vaccine.

Vaccines
Pneumococcal, adult

(STRIDE-3; NCT05425732, STRIDE-4; NCT05464420, STRIDE-5; NCT05526716, STRIDE-6; NCT05420961, STRIDE-7; NCT05393037, STRIDE-8; NCT05696080, STRIDE-9; NCT05633992, STRIDE-10; NCT05569954)

Under review (JPN)
Pneumococcal, child

(STRIDE-13; NCT06177912)

Vaccine

clesrovimab
(MK-1654)

Respiratory syncytial virus
Under Review (US, EU)

(NCT04767373, NCT04938830)

Therapeutic area: Respiratory

Mechanism of Action: Clesrovimab is an investigational respiratory syncytial virus (RSV) fusion (F) glycoprotein neutralizing monoclonal antibody.

Modality: Monoclonal antibody

clesrovimab

(MK-1654)

Mechanism of Action: Clesrovimab is an investigational respiratory syncytial virus (RSV) fusion (F) glycoprotein neutralizing monoclonal antibody.

Respiratory
Respiratory syncytial virus

(NCT04767373, NCT04938830)

Under review (US, EU)
Monoclonal antibody

LAGEVRIO™
(MK-4482)

COVID-19

(MOVe-OUT; NCT04575597, MOVe-NOW;NCT06667700)

 

Therapeutic area: Antiviral

Mechanism of Action: Molnupiravir is an investigational antiviral ribonucleoside prodrug of N-hydroxycytidine (NHC). NHC triphosphate is incorporated into viral RNA by viral RNA polymerase and results in an accumulation of errors in the viral genome leading to inhibition of replication.

LAGEVRIO is being developed under an agreement with Ridgeback Biotherapeutics LP.

LAGEVRIO is available in the U.S. under Emergency Use Authorization.

Modality: Small molecule

LAGEVRIO™

(MK-4482)

Mechanism of Action: Molnupiravir is an investigational antiviral ribonucleoside prodrug of N-hydroxycytidine (NHC). NHC triphosphate is incorporated into viral RNA by viral RNA polymerase and results in an accumulation of errors in the viral genome leading to inhibition of replication.

LAGEVRIO is being developed under an agreement with Ridgeback Biotherapeutics LP.

LAGEVRIO is available in the U.S. under Emergency Use Authorization.

Antiviral
COVID-19

(MOVe-OUT; NCT04575597, MOVe-NOW;NCT06667700)

 

(US)
Small molecule

nemtabrutinib
(MK-1026)

Hematological malignancies

(BELLWAVE-001; NCT03162536, BELLWAVE-003; NCT04728893,  BELLWAVE-008; NCT05624554,
BELLWAVE-010; NCT05947851
BELLWAVE-011; NCT06136559)

Therapeutic area: Oncology

Mechanism of Action: Nemtabrutinib is an investigational reversible, non-covalent Bruton’s tyrosine kinase (BTK) inhibitor that is being studied for the suppression of oncogenic B-cell receptor signaling with activity against wild-type BTK and BTK pathway mutants.

Nemtabrutinib was acquired as part of the acquisition of ArQule, Inc.

Modality: Small molecule

nemtabrutinib

(MK-1026)

Mechanism of Action: Nemtabrutinib is an investigational reversible, non-covalent Bruton’s tyrosine kinase (BTK) inhibitor that is being studied for the suppression of oncogenic B-cell receptor signaling with activity against wild-type BTK and BTK pathway mutants.

Nemtabrutinib was acquired as part of the acquisition of ArQule, Inc.

Oncology
Hematological malignancies

(BELLWAVE-001; NCT03162536, BELLWAVE-003; NCT04728893,  BELLWAVE-008; NCT05624554,
BELLWAVE-010; NCT05947851
BELLWAVE-011; NCT06136559)

Small molecule

WINREVAIR™
(MK-7962)

Pulmonary arterial hypertension
Under Review (JPN)

(STELLAR; NCT05818137)

Pulmonary arterial hypertension

(SOTERIA; NCT04796337, ZENITH; NCT04896008, HYPERION; NCT04811092)

Pulmonary hypertension due to Left Heart Disease

(CADENCE; NCT04945460; MOONBEAM; NCT05587712; LIGHTRAY; NCT06664801)

Therapeutic area: Cardiovascular

Mechanism of Action: Sotatercept is an activin signaling inhibitor that binds to activin A and other TGF-β superfamily ligands.

Sotatercept was acquired as part of the acquisition of Acceleron.

Modality: Therapeutic protein

WINREVAIR™

(MK-7962)

Mechanism of Action: Sotatercept is an activin signaling inhibitor that binds to activin A and other TGF-β superfamily ligands.

Sotatercept was acquired as part of the acquisition of Acceleron.

Cardiovascular
Pulmonary arterial hypertension

(STELLAR; NCT05818137)

Under review (JPN)
Pulmonary arterial hypertension

(SOTERIA; NCT04796337, ZENITH; NCT04896008, HYPERION; NCT04811092)

Pulmonary hypertension due to Left Heart Disease

(CADENCE; NCT04945460; MOONBEAM; NCT05587712; LIGHTRAY; NCT06664801)

Therapeutic protein

intismeran autogene
(V940)

Melanoma

(INTerpath-001; NCT05933577)

Non-small cell lung cancer

(INTerpath-002; NCT06077760), INTerpath-009; NCT06623422 )

Bladder cancer

(INTerpath-005; NCT06305767)

Renal cell carcinoma

(INTerpath-004; NCT06307431)

Therapeutic area: Oncology

Mechanism of Action: V940 is an investigational mRNA-based individualized neoantigen therapy targeting tumor associated antigens expressed by a patient’s cancer cells.

V940 is being developed in combination with KEYTRUDA.

V940 is being developed in collaboration with Moderna.

Modality: Vaccine

intismeran autogene

(V940)

Mechanism of Action: V940 is an investigational mRNA-based individualized neoantigen therapy targeting tumor associated antigens expressed by a patient’s cancer cells.

V940 is being developed in combination with KEYTRUDA.

V940 is being developed in collaboration with Moderna.

Oncology
Melanoma

(INTerpath-001; NCT05933577)

Non-small cell lung cancer

(INTerpath-002; NCT06077760), INTerpath-009; NCT06623422 )

Bladder cancer

(INTerpath-005; NCT06305767)

Renal cell carcinoma

(INTerpath-004; NCT06307431)

Vaccine

quavonlimab
(MK-1308)

Non-small cell lung cancer

(KN-495; NCT03516981)

Therapeutic area: Oncology

Mechanism of Action: Quavonlimab is an investigational monoclonal antibody that binds to CTLA-4 and inhibits interaction with its ligands.

Quavonlimab is being developed in combination with KEYTRUDA.

Quavonlimab is being developed under an agreement with Akeso, Inc.

Modality: Monoclonal antibody

quavonlimab

(MK-1308)

Mechanism of Action: Quavonlimab is an investigational monoclonal antibody that binds to CTLA-4 and inhibits interaction with its ligands.

Quavonlimab is being developed in combination with KEYTRUDA.

Quavonlimab is being developed under an agreement with Akeso, Inc.

Oncology
Non-small cell lung cancer

(KN-495; NCT03516981)

Monoclonal antibody

enlicitide decanoate
(MK-0616)

Hypercholesterolemia

(CORALreef Lipids; NCT05952856,
CORALreef Outcomes; NCT06008756,
CORALreef HeFH; NCT05952869,
CORALreef AddOn; NCT06450366,
CORALreef Extension; NCT06492291)

Therapeutic area: Cardiovascular

Mechanism of Action: enlicitide decanoate is an investigational inhibitor of Proprotein convertase subtilisin/kexin type 9 (PCSK9).

 

Modality: Peptide

enlicitide decanoate

(MK-0616)

Mechanism of Action: enlicitide decanoate is an investigational inhibitor of Proprotein convertase subtilisin/kexin type 9 (PCSK9).

 

Cardiovascular
Hypercholesterolemia

(CORALreef Lipids; NCT05952856,
CORALreef Outcomes; NCT06008756,
CORALreef HeFH; NCT05952869,
CORALreef AddOn; NCT06450366,
CORALreef Extension; NCT06492291)

Peptide

islatravir + MK-8507
(MK-8591B)

HIV-1 infection

(IMAGINE-DR; NCT04564547)

Therapeutic area: Antiviral

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. MK-8507 is an investigational non-nucleoside reverse transcriptase translocation inhibitor of HIV-1.

 

Islatravir is being developed under an agreement with the Yamasa Corporation.

Modality: Small molecule fixed-dose combination

islatravir + MK-8507

(MK-8591B)

Mechanism of Action: Islatravir is an investigational nucleoside reverse transcriptase translocation inhibitor of HIV-1. MK-8507 is an investigational non-nucleoside reverse transcriptase translocation inhibitor of HIV-1.

 

Islatravir is being developed under an agreement with the Yamasa Corporation.

Antiviral
HIV-1 infection

(IMAGINE-DR; NCT04564547)

Small molecule fixed-dose combination

quavonlimab + pembrolizumab
(MK-1308A)

Renal cell carcinoma

(LITESPARK-012; NCT04736706)

Therapeutic area: Oncology

Mechanism of Action: Quavonlimab is an investigational monoclonal antibody that binds to CTLA-4 and inhibits interaction with its ligands. Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

Quavonlimab is being developed under an agreement with Akeso, Inc.

Modality: Monoclonal antibody fixed-dose combination

quavonlimab + pembrolizumab

(MK-1308A)

Mechanism of Action: Quavonlimab is an investigational monoclonal antibody that binds to CTLA-4 and inhibits interaction with its ligands. Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

Quavonlimab is being developed under an agreement with Akeso, Inc.

Oncology
Renal cell carcinoma

(LITESPARK-012; NCT04736706)

Monoclonal antibody fixed-dose combination

efinopegdutide
(MK-6024)

Metabolic dysfunction-associated steatohepatitis

(NCT04944992; NCT06465186; NCT05877547; NCT06482112)

Therapeutic area: Endocrinology

Mechanism of Action: Efinopegdutide is an investigational dual GLP-1/glucagon receptor agonist.

Efinopegdutide is being developed under an agreement with Hanmi Pharmaceutical.

Modality: Peptide

efinopegdutide

(MK-6024)

Mechanism of Action: Efinopegdutide is an investigational dual GLP-1/glucagon receptor agonist.

Efinopegdutide is being developed under an agreement with Hanmi Pharmaceutical.

Endocrinology
Metabolic dysfunction-associated steatohepatitis

(NCT04944992; NCT06465186; NCT05877547; NCT06482112)

Peptide

KEYTRUDA®
(MK-3475) **

Resectable locally advanced head and neck cancer carcinoma
Under Review (US, JPN)

(KN-689;  NCT03765918)

1L unresectable advanced or metastatic malignant pleural mesothelioma
Under Review (JPN)

(KN-483; NCT02784171)

Hepatocellular carcinoma (EU)

(KN-937; NCT03867084)

Ovarian cancer

(KN-B96/ENGOT-ov65; NCT05116189)

Small cell lung cancer

(KN-604; NCT03066778)

Advanced solid tumors

(KN-158; NCT02628067, KN-051; NCT02332668)

Prostate cancer

(KN-991; NCT04191096, KN-641; NCT03834493, KN-921; NCT03834506)

Therapeutic area: Oncology

Mechanism of Action: Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

**Select KEYTRUDA clinical trials are shown.

Modality: Monoclonal antibody

KEYTRUDA®

(MK-3475) **

Mechanism of Action: Pembrolizumab is a monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response.

**Select KEYTRUDA clinical trials are shown.

Oncology
Resectable locally advanced head and neck cancer carcinoma

(KN-689;  NCT03765918)

Under review (US, JPN)
1L unresectable advanced or metastatic malignant pleural mesothelioma

(KN-483; NCT02784171)

Under review (JPN)
Hepatocellular carcinoma (EU)

(KN-937; NCT03867084)

Ovarian cancer

(KN-B96/ENGOT-ov65; NCT05116189)

Small cell lung cancer

(KN-604; NCT03066778)

Advanced solid tumors

(KN-158; NCT02628067, KN-051; NCT02332668)

Prostate cancer

(KN-991; NCT04191096, KN-641; NCT03834493, KN-921; NCT03834506)

Monoclonal antibody

zilovertamab vedotin
(MK-2140)

Hematological malignancies

(waveLINE-003; NCT05139017, waveLINE-004; NCT05144841,  waveLINE-006; NCT05458297, waveLINE-007; NCT05406401; waveLINE-010; NCT06717347)

Therapeutic area: Oncology

Mechanism of Action: Zilovertamab vedotin is an investigational antibody-drug conjugate that consists of a ROR1-targeting antibody linked to monomethyl auristatin E (MMAE)-containing payload.

Zilovertamab vedotin was acquired as part of the acquisition of VelosBio.

Modality: Antibody-drug conjugate

zilovertamab vedotin

(MK-2140)

Mechanism of Action: Zilovertamab vedotin is an investigational antibody-drug conjugate that consists of a ROR1-targeting antibody linked to monomethyl auristatin E (MMAE)-containing payload.

Zilovertamab vedotin was acquired as part of the acquisition of VelosBio.

Oncology
Hematological malignancies

(waveLINE-003; NCT05139017, waveLINE-004; NCT05144841,  waveLINE-006; NCT05458297, waveLINE-007; NCT05406401; waveLINE-010; NCT06717347)

Antibody-drug conjugate

WELIREG™
(MK-6482)

Advanced, unresectable, or metastatic pheochromocytoma and paraganglioma
Under Review (US)

(LITESPARK-015; NCT04924075)

Previously treated advanced renal cell carcinoma
Under Review (JPN)

(LITESPARK-005; NCT04195750)

von Hippel-Lindau (VHL) disease
Under Review (JPN)

(LITESPARK-004; NCT03401788)

Renal cell carcinoma

(LITESPARK-022; NCT05239728, LITESPARK-012; NCT04736706, LITESPARK-011; NCT04586231)

Therapeutic area: Oncology

Mechanism of Action: Belzutifan is an inhibitor of hypoxia-inducible factor 2 alpha (HIF-2α). Belzutifan binds to HIF-2α, and in conditions of hypoxia or impairment of VHL protein function, belzutifan inhibits the HIF-2α-HIF-1β interaction, leading to reduced transcription and expression of HIF-2α target genes.

WELIREG is being developed as a monotherapy and/or in combination with KEYTRUDA.

WELIREG was acquired as part of the acquisition of Peloton Therapeutics, Inc.

Modality: Small molecule

WELIREG™

(MK-6482)

Mechanism of Action: Belzutifan is an inhibitor of hypoxia-inducible factor 2 alpha (HIF-2α). Belzutifan binds to HIF-2α, and in conditions of hypoxia or impairment of VHL protein function, belzutifan inhibits the HIF-2α-HIF-1β interaction, leading to reduced transcription and expression of HIF-2α target genes.

WELIREG is being developed as a monotherapy and/or in combination with KEYTRUDA.

WELIREG was acquired as part of the acquisition of Peloton Therapeutics, Inc.

Oncology
Advanced, unresectable, or metastatic pheochromocytoma and paraganglioma

(LITESPARK-015; NCT04924075)

Under review (US)
Previously treated advanced renal cell carcinoma

(LITESPARK-005; NCT04195750)

Under review (JPN)
von Hippel-Lindau (VHL) disease

(LITESPARK-004; NCT03401788)

Under review (JPN)
Renal cell carcinoma

(LITESPARK-022; NCT05239728, LITESPARK-012; NCT04736706, LITESPARK-011; NCT04586231)

Small molecule

What do the phases of clinical trials mean?

Phase 1

Phase 1 clinical trials test the medicine or vaccine in a small group of 20 to 100 volunteers who are usually healthy, but not always. The trial often takes place in a hospital. The goals are to determine:

  • If the medicine or vaccine is safe
  • If there are any side effects
  • How the medicine is broken down by and discharged from the body
  • How much medicine is needed and how often
  • For a vaccine, researchers see if it causes the desired response from the body’s immune system

Phase 1 trials can take from six months to one year to complete.

 


Phase 2

Phase 2 clinical trials test the vaccine or medicine in approximately 100 to 500 volunteers. In the case of medicines, volunteers usually have the disease or condition the investigational medicine is designed to treat. In vaccine studies, the volunteers are usually healthy. The goals of this phase are to determine:

  • How well the medicine or vaccine works
  • If the medicine or vaccine is safe
  • If there are any side effects
  • How much of the medicine or vaccine is needed and how often

Phase 2 trials can take from six months to one year or more to complete.


Phase 3

Phase 3 clinical trials can test the medicine or vaccine in 1,000 to 5,000 patient volunteers. For medicines, volunteers have the disease or condition the medicine is designed to treat. In vaccine studies, the volunteers may be healthy or have diseases or conditions. Phase 3 trials take place in hospitals, clinics or physician offices. Researchers closely monitor patients at regular intervals to:

  • Confirm that the medication or vaccine is effective
  • Identify and monitor side effects
  • Compare the medicine or vaccine to commonly used treatments

Phase 3 trials can take from one to four years to complete, depending on the disease, length of study and number of volunteers.


Under review

The application has been submitted to the regulatory authorities for review.


No Duty to Update

The information contained in this chart was current as of April 30, 2025. While this pipeline chart remains on the company’s website the company assumes no duty to update the information to reflect subsequent developments. Consequently, the company will not update the information contained in the pipeline chart and investors should not rely upon the information as current or accurate after April 30, 2025.

The chart reflects the company research pipeline as of April 30, 2025.

Candidates shown in Phase 3 include specific products. Candidates shown in Phase 2 include the most advanced compound with a specific mechanism in a given therapeutic area. Phase 1 candidates are not shown.