Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
| NCT ID | Title | Phase | Status | Enrollment | Velocity | Design | Start | Completion | Last Updated | Sites | Countries |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NCT07060807 | A Clinical Study of Patritumab Deruxtecan to Treat Breast Cancer (MK-1022-016) | PHASE3 | RECRUITING | 1,000 | — | — | Jul 21, 2025 | Jul 14, 2033 | Jun 8, 2026 | 182 | United States, Argentina +23 |
| NCT06797635 | 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) | PHASE2 | RECRUITING | 372 | — | — | Mar 20, 2025 | Dec 31, 2034 | May 20, 2026 | 17 | United States, South Korea +2 |
| NCT06686394 | Study of Patritumab Deruxtecan With Other Anticancer Agents in Participants With HER2 Positive Breast Cancer That Has Spread and Cannot Be Surgically Removed (MK-1022-009) | PHASE1 | RECRUITING | 81 | — | — | Feb 26, 2025 | Apr 18, 2030 | May 22, 2026 | 18 | United States, Canada +4 |
PFS is defined as the time from first day of study intervention to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by blinded independent central review (BICR). Per Response Evaluation Criteria In Solid Tumors (RECIST) 1.1, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. The appearance of one or more new lesions is also considered PD. PFS as assessed by BICR will be presented.
OS is the length of time from when the participant starts treatment until death from any cause.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who experience an AE will be presented for Part 1.
A DLT is defined by the National Cancer Institute Common Terminology for Adverse Events (NCI CTCAE) Version 5.0, assessed by investigator as drug-related: Grade (gr) 3 or 4 nonhematologic toxicity (with exceptions); gr 3 or gr 4 laboratory values (with exceptions); gr 3 or 4 febrile neutropenia; prolonged delay (\>2 weeks) in initiating Cycle 2 (cycle length = 3 weeks) due to intervention-related toxicity; any intervention-related toxicity that causes the participant to discontinue intervention during Cycle 1; interstitial lung disease as per investigator; any other gr ≥3 pulmonary toxicity; or gr 5 toxicity.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who discontinued study treatment due to an AE will be presented for Part 1.
pCR (ypT0/Tis ypN0) is defined as the absence of residual invasive cancer on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes after completion of neoadjuvant systemic therapy at the time of definitive surgery.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who experience an AE will be presented for Part 2.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who discontinued study treatment due to an AE will be presented for Part 2.
DLT will be defined as any drug-related AE observed during the DLT evaluation period that results in a change to a given dose or a delay in initiating the next cycle. The number of participants who experience a DLT will be presented.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who experience an AE will be presented.
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. The number of participants who discontinue study treatment due to an AE will be presented.
| Arm | Type | Description |
|---|---|---|
| Patritumab Deruxtecan | EXPERIMENTAL | Participants receive patritumab deruxtecan via intravenous (IV) infusion every 3 weeks (Q3W) for approximately 13 months. |
| Treatment of Physician's Choice | ACTIVE_COMPARATOR | Participants receive treatment of physician's choice (TPC) for up to 13 months. The TPC may be any of the following options: Paclitaxel (80 mg/m\^2) on Days 1, 8, 15, and 22 of each 4-week cycle; Paclitaxel (90 mg/m\^2) on Days 1, 8, and 15 of each 4-week cycle; Nab-paclitaxel (100 mg/m\^2) on Days 1, 8, and 15 of each 4-week cycle; Capecitabine (1000 mg/m\^2) bid on Days 1 to 14 of each 3-week cycle; Liposomal doxorubicin (50 mg/m\^2) on Day 1 of each 4-week cycle; or trastuzumab deruxtecan (T-DXd) (5.4 mg/kg) Q3W. |
| Part 1, A: Pembrolizimab + patritumab deruxtecan → Pembrolizumab + paclitaxel + carboplatin | EXPERIMENTAL | In Part 1, participants receive neoadjuvant pembrolizumab 200 mg via intravenous (IV) infusion every 3 weeks (Q3W) plus patritumab deruxtecan via IV infusion Q3W for 12 weeks, followed by pembrolizumab 200 mg via IV infusion Q3W plus paclitaxel 80 mg/m\^2 via IV infusion every week (QW) and carboplatin AUC1.5 mg/ml/min via IV infusion QW for 12 weeks. At 3 to 6 weeks after last dose of neoadjuvant treatment, participants will undergo surgery for their breast cancer. |
| Part 2, A: Pembrolizimab + patritumab deruxtecan → Pembrolizumab + paclitaxel + carboplatin | EXPERIMENTAL | In Part 2, participants receive neoadjuvant pembrolizumab 200 mg IV infusion every Q3W plus patritumab deruxtecan (dose to be determined in part 1) IV infusion Q3W for 12 weeks, followed by pembrolizumab 200 mg IV infusion Q3W plus paclitaxel 80 mg/m\^2 IV infusion QW and carboplatin AUC1.5 mg/ml/min IV infusion QW for 12 weeks. At 3-6 weeks after last dose of neoadjuvant treatment, participants undergo surgery for breast cancer. After surgery, participants receive adjuvant pembrolizumab 400 mg IV every 6 weeks (Q6W) for \~30 weeks. Additional adjuvant treatment of physician's choice (TPC) may be given to participants with residual disease. TPC options are olaparib 300 mg oral twice daily (BID) for 1 year (participants with germline BRCA mutation \[gBRCAm\] only), capecitabine 1000-1250 mg/m\^2 oral BID days 1-14 and 22-35 Q6W for 4 six-week cycles or doxorubicin 60mg/m\^2 (or epirubicin 90 mg/m\^2) IV Q3W or every 2 weeks (Q2W) and cyclophosphamide 600 mg/m\^2 IV Q3W or Q2W for 4 doses. |
| Part 2, B: Pembrolizumab + paclitaxel + carboplatin → Pembrolizumab + patritumab deruxtecan | EXPERIMENTAL | In Part 2, participants receive neoadjuvant pembrolizumab 200 mg IV infusion Q3W plus paclitaxel 80 mg/m\^2 IV infusion QW and carboplatin AUC1.5 mg/ml/min IV infusion QW for 12 weeks, followed by pembrolizumab 200 mg IV infusion Q3W plus patritumab deruxtecan (dose to be determined in part 1) via IV infusion Q3W for 12 weeks. At 3 to 6 weeks after last dose of neoadjuvant treatment, participants will undergo surgery for their breast cancer. After surgery, participants will receive adjuvant pembrolizumab 400 mg IV infusion Q6W for \~30 weeks. Additional adjuvant TPC may be administered to participants with residual disease. TPC options include olaparib 300 mg oral BID for 1 year (participants with gBRCAm only), capecitabine 1000-1250 mg/m\^2 oral BID days 1-14 and 22-35 Q6W for 4 six-week cycles or doxorubicin 60mg/m\^2 (or epirubicin 90 mg/m\^2) IV infusion Q3W or Q2W and cyclophosphamide 600 mg/m\^2 IV infusion Q3W or Q2W for 4 doses. |
| Part 2, C: Pembro + paclitaxel + carboplatin→ Pembro + doxorubicin (or epirubicin) +cyclophosphamide | ACTIVE_COMPARATOR | In Part 2, participants receive neoadjuvant pembrolizumab 200 mg IV infusion Q3W plus paclitaxel 80 mg/m\^2 IV infusion QW and carboplatin AUC1.5 mg/ml/min via IV infusion QW for 12 weeks, followed by pembrolizumab 200 mg IV infusion Q3W plus doxorubicin 60mg/m\^2 (or epirubicin 90 mg/m\^2) IV infusion Q3W and cyclophosphamide 600 mg/m\^2 IV infusion Q3W for 12 weeks. At 3 to 6 weeks after last dose of neoadjuvant treatment, participants will undergo surgery for their breast cancer. After surgery, participants will receive adjuvant pembrolizumab 400 mg IV infusion Q6W for approximately 30 weeks. Additional adjuvant TPC may be administered to participants with residual disease. TPC options include olaparib 300 mg oral BID for 1 year (participants with gBRCAm only) or capecitabine 1000-1250 mg/m\^2 oral BID days 1-14 and 22-35 Q6W for 4 six-week cycles. |
| Patritumab deruxtecan plus trastuzumab | EXPERIMENTAL | Participants receive patritumab deruxtecan intravenous (IV) infusion and trastuzumab or trastuzumab biosimilar IV infusion on Day 1 of each 21-day cycle (every 3 weeks) until disease progression, intolerable toxicity, or investigator decision. |
| Patritumab deruxtecan plus pertuzumab and trastuzumab | EXPERIMENTAL | Participants receive patritumab deruxtecan IV infusion, pertuzumab IV infusion, and trastuzumab or trastuzumab biosimilar IV infusion on Day 1 of each 21-day cycle (every 3 weeks) until disease progression, intolerable toxicity, or investigator decision. |
| Patritumab deruxtecan plus trastuzumab and tucatinib | EXPERIMENTAL | Participants receive patritumab deruxtecan IV infusion and trastuzumab or trastuzumab biosimilar IV infusion on Day 1 of each 21-day cycle (every 3 weeks), and tucatinib is administered orally twice daily for each 21-day cycle, until disease progression, intolerable toxicity, or investigator decision. |
| Name | Type | Description |
|---|---|---|
| Patritumab deruxtecan | BIOLOGICAL | Administered via intravenous (IV) infusion |
| Paclitaxel | DRUG | Administered via IV infusion |
| Nab-paclitaxel | DRUG | Administered via IV infusion |
| Capecitabine | DRUG | Administered via oral tablets |
| Liposomal doxorubicin | DRUG | Administered via IV infusion |
| Trastuzumab deruxtecan | BIOLOGICAL | Administered via IV infusion |
| Pembrolizumab | BIOLOGICAL | Administered via IV infusion as neoadjuvant treatment in Part 1 and via IV infusion as neoadjuvant and adjuvant treatment in Part 2 |
| Carboplatin | DRUG | Administered via IV infusion as neoadjuvant treatment |
| Doxorubicin hydrochloride | DRUG | Administered via IV infusion as neoadjuvant treatment in Arm C and an option for adjuvant treatment for participants with residual disease in Arms A and B in Part 2 |
| Epirubicin hydrochloride | DRUG | Administered via IV infusion as neoadjuvant treatment in Arm C and an option for adjuvant treatment for participants with residual disease in Arms A and B in Part 2 |
| Cyclophosphamide | DRUG | Administered via IV infusion as neoadjuvant treatment in Arm C and an option for adjuvant treatment for participants with residual disease in Arms A and B in Part 2 |
| Olaparib | DRUG | Administered via oral tablets as an option for adjuvant treatment for participants with germline BRCA mutations and residual disease in Part 2 |
| Trastuzumab | BIOLOGICAL | Trastuzumab administered via IV infusion |
| Trastuzumab Biosimilar | BIOLOGICAL | Trastuzumab biosimilar administered via IV infusion |
| Pertuzumab | BIOLOGICAL | Pertuzumab administered via IV infusion |
| Tucatinib | BIOLOGICAL | Tucatinib administered as oral tablets |
Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has a diagnosis of hormone receptor positive (HR+)/human epidermal growth factor receptor 2 (HER2)- invasive breast carcinoma that is either locally advanced disease not amenable to resection with curat...