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Study details
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Study of Patritumab Deruxtecan Plus Pembrolizumab With Other Anticancer Agents in Participants With High-Risk Early-Stage Triple-Negative or Hormone Receptor-Low Positive/HER-2 Negative Breast Cancer (MK-1022-010, HERTHENA-Breast-03)

Merck Sharp & Dohme LLC
NCT IDNCT06797635ClinicalTrials.gov data as of Apr 2026
Phase

Phase 2

Target enrollment

372

Study length

about 9.8 years

Ages

18+

Locations

8 sites in CA, IL, MT +4

About this study

This trial is testing a treatment with patritumab deruxtecan, pembrolizumab, and other anticancer agents in people with high-risk early-stage triple-negative or hormone receptor-low positive/HER-2 negative breast cancer. The goal is to learn about the safety of these treatments and if people who receive patritumab deruxtecan, pembrolizumab, and chemotherapy before surgery have fewer cancer cells removed during surgery compared to those who receive only pembrolizumab (pembro) and chemotherapy.

Based on ClinicalTrials.gov records.

What participants do

  • 1.Receive Patritumab deruxtecan
  • 2.Receive Pembrolizumab
  • 3.Take Capecitabine
  • +3 more
PhasePhase 2
DrugCapecitabine
Routeoral
Primary goalPart 1: Number of Participants Experiencing an Adverse Event (AE)

Participation effort

Estimated from trial records. Details can vary by site.

Time + visits
Low12%
Logistics
Moderate50%

Logistics difficulty varies by site location and availability.

Trial highlights

Treatment details

Auto-extracted from trial records to preview treatments and outcomes.

Drug classes

capecitabine, carboplatin, cyclophosphamide (Alkylating chemotherapy; crosslinks DNA strands), Antineoplastic Agent [TC] (Topoisomerase 2 Inhibitors), Antineoplastic Agent [TC] (Immunologic Adjuvants), olaparib, paclitaxel (Taxane chemotherapy; stabilizes microtubules), pembrolizumab (Immune checkpoint inhibitor; blocks PD-1 to boost T-cell attack on cancer)

Drug routes

oral (Oral Tablet), infusion, oral, injection, intravenous

Endpoints

Primary: Part 1: Number of Participants Experiencing an Adverse Event (AE), Part 1: Number of Participants who Discontinued Study Treatment Due to an AE, Part 2: Number of Participants Experiencing an AE, Part 2: Number of Participants who Discontinued Study Treatment Due to an AE

Secondary: Part 2: Event-Free Survival (EFS), Part 2: Overall Survival (OS)

Body systems

Oncology