On June 24, 2026, the Food and Drug Administration approved sacituzumab govitecan-hziy (Trodelvy, Gilead Sciences, Inc.) for two indications in adults with triple-negative breast cancer (TNBC). The first indication, supported by ASCENT-03, is for sacituzumab govitecan-hziy as a single agent for the first-line treatment of adults with unresectable locally advanced or metastatic TNBC who are not candidates for PD-1 or PD-L1 inhibitor-based therapy. The second indication, supported by ASCENT-04/KEYNOTE D-19, is for sacituzumab govitecan-hziy in combination with pembrolizumab (Keytruda, Merck & Co., Inc.) or pembrolizumab and berahyaluronidase alfa-pmph (Keytruda Qlex, Merck & Co., Inc.) for the first-line treatment of adults with unresectable locally advanced or metastatic TNBC whose tumors express PD-L1 (CPS ≥ 10) as determined by an FDA-authorized test.Full prescribing information for Trodelvy, Keytruda, and Keytruda Qlex will be posted on Drugs@FDA.Efficacy and SafetyEfficacy of sacituzumab govitecan-hziy as a single agent for TNBC was evaluated in ASCENT-03 (NCT05382299), a multicenter, open-label, randomized trial that enrolled 558 patients with unresectable locally advanced or metastatic TNBC who had not received previous systemic therapy for advanced disease and who were not candidates for PD-1 or PD-L1 inhibitor therapy. Patients were randomized (1:1) to either sacituzumab govitecan-hziy on Days 1 and 8 of a 21-day cycle or nab-paclitaxel on Days 1, 8, and 15 of a 28-day cycle, paclitaxel on Days 1, 8, and 15 of a 28-day cycle, or gemcitabine and carboplatin AUC2 on Days 1 and 8 of a 21-day cycle (the TPC arm).The primary efficacy outcome measure was progression-free survival (PFS) as assessed by Blinded Independent Central Review (BICR) per RECIST v1.1. Additional efficacy outcome measures included overall survival (OS) and confirmed objective response rate (ORR). Median PFS was 9.7 months (95% CI: 8.1, 11.1) in the sacituzumab govitecan-hziy arm and 6.9 months (95% CI: 5.6, 8.2) in the TPC arm (Hazard ratio 0.62 [95% CI: 0.50, 0.77]; p-value <0.0001). Confirmed ORR was 50% (95% CI: 44, 56) and 47% (95% CI: 41, 53) in the respective arms. OS data were immature.Efficacy of sacituzumab govitecan-hziy in combination with pembrolizumab was evaluated in ASCENT-04/KEYNOTE-D19 (NCT05382286), a multicenter, open-label, randomized trial that enrolled 443 patients with locally advanced or metastatic TNBC who had not received previous systemic therapy for advanced disease and whose tumor express PD-L1 (CPS ≥ 10) according to the PD-L1 IHC 22C3 pharmDx assay. Patients were randomized (1:1) to receive either sacituzumab govitecan-hziy on Days 1 and Day 8 of a 21-day cycle in combination with pembrolizumab on Day 1 of a 21-day cycle or nab-paclitaxel on Days 1, 8 and 15 of a 28-day cycle, paclitaxel on Days 1, 8 and 15 of a 28-day cycle, or gemcitabine and carboplatin AUC2 on Days 1 and 8 of a 21-day cycle in combination with pembrolizumab on Day 1 of a 21-day cycle (the TPC plus pembrolizumab arm).The primary efficacy outcome measure was PFS by BICR per RECIST v1.1. Additional efficacy outcome measures included OS and ORR. Median PFS was 11.2 months (95% CI: 9.3, 16.7) in the sacituzumab govitecan-hziy arm and 7.8 months (95% CI: 7.3, 9.3) in the TPC plus pembrolizumab arm (Hazard ratio 0.65 [95% CI: 0.51, 0.84]; p-value 0.0009). Confirmed ORR was 61% (95% CI: 55, 68) and 55% (95% CI: 48, 62) in the respective arms. OS data were immature.The prescribing information of sacituzumab govitecan-hziy contains a boxed warning for diarrhea and neutropenia and includes warnings and precautions for hypersensitivity and infusion-related reactions, nausea/vomiting, patients with reduced UGT1A1 activity, and embryo-fetal toxicity.The prescribing information of pembrolizumab includes warnings and precautions for immune-mediated adverse reactions, infusion-related reactions, complications of allogeneic hematopoietic stem cell transplantation, and embryo-fetal toxicity.Recommended DosageThe recommended sacituzumab govitecan-hziy dose as a single agent or in combination with pembrolizumab is 10 mg/kg administered as an intravenous infusion on Days 1 and 8 of each 21-day cycle. Sacituzumab govitecan-hziy should be continued until disease progression or unacceptable toxicity. Refer to the prescribing information for the recommended dosing information for pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph.This review was conducted under Project Orbis, an initiative of the FDA Oncology Center of Excellence. Project Orbis provides a framework for concurrent submission and review of oncology drugs among international partners. For this review, FDA collaborated with the Australian Therapeutic Goods Administration (TGA), Israel’s Ministry of Health (ImoH), the Brazilian Health Regulatory Agency (ANVISA), Health Canada (HC), and Switzerland’s Swissmedic (SMC). The application reviews are ongoing at the other regulatory agencies.This review used the Assessment Aid, a voluntary submission from the applicant to facilitate the FDA’s assessment. The FDA approved these applications one month ahead of the FDA goal date.Healthcare professionals should report all serious adverse events suspected to be associated with the use of any medicine and device to FDA’s MedWatch Reporting System or by calling 1-800-FDA-1088.For assistance with single-patient INDs for investigational oncology products, healthcare professionals may contact OCE’s Project Facilitate at 240-402-0004 or email OncProjectFacilitate@fda.hhs.gov.Follow the Oncology Center of Excellence on X (formerly Twitter) @FDAOncology.