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Clinical trialNCT05256225SuspendedPhase 3Interventional

Testing the Addition of Herceptin Hylecta or Phesgo to the Usual Chemotherapy for HER2 Positive Endometrial Serous Carcinoma or Carcinosarcoma

SponsorNational Cancer Institute (NCI)Enrollment360Endometrial CarcinomaEndometrial Clear Cell AdenocarcinomaEndometrial Dedifferentiated CarcinomaEndometrial Endometrioid AdenocarcinomaEndometrial Mixed Cell AdenocarcinomaEndometrial Serous Adenocarcinoma+2 more conditions
View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

408 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

Puerto Rico
  • Centro Comprensivo de Cancer de Upr

    San Juan, Puerto Rico

South Korea
  • Keimyung University-Dongsan Medical Center

    Dalseo-gu, Daegu, South Korea

  • Samsung Changwon Hospital

    Seoul, Gyeongsangnam-do, South Korea

  • Seoul National University Bundang Hospital

    Seongnam, Kyeonggi-do, South Korea

  • Gangnam Severance Hospital

    Seoul, South Korea

United States
  • University of Alabama at Birmingham Cancer Center

    Birmingham, Alabama, United States

  • Alaska Women'S Cancer Care

    Anchorage, Alaska, United States

  • Banner University Medical Center - Tucson

    Tucson, Arizona, United States

  • University of Arizona Cancer Center-North Campus

    Tucson, Arizona, United States

  • University of Arkansas for Medical Sciences

    Little Rock, Arkansas, United States

  • Sutter Auburn Faith Hospital

    Auburn, California, United States

  • Alta Bates Summit Medical Center-Herrick Campus

    Berkeley, California, United States

  • John Muir Medical Center-Concord

    Concord, California, United States

  • City of Hope Comprehensive Cancer Center

    Duarte, California, United States

  • City of Hope Seacliff

    Huntington Beach, California, United States

  • City of Hope at Irvine Lennar

    Irvine, California, United States

  • Kaiser Permanente-Irvine

    Irvine, California, United States

  • Uci Health - Chao Family Comprehensive Cancer Center and Ambulatory Care

    Irvine, California, United States

  • City of Hope at Long Beach Elm

    Long Beach, California, United States

  • Kaiser Permanente Los Angeles Medical Center

    Los Angeles, California, United States

  • Memorial Medical Center

    Modesto, California, United States

  • Palo Alto Medical Foundation-Gynecologic Oncology

    Mountain View, California, United States

  • Saint Joseph Hospital - Orange

    Orange, California, United States

  • Uc Irvine Health/chao Family Comprehensive Cancer Center

    Orange, California, United States

  • Stanford Cancer Institute Palo Alto

    Palo Alto, California, United States

  • Kaiser Permanente - Panorama City

    Panorama City, California, United States

  • Kaiser Permanente-Riverside

    Riverside, California, United States

  • Sutter Roseville Medical Center

    Roseville, California, United States

  • Sutter Medical Center Sacramento

    Sacramento, California, United States

  • University of California Davis Comprehensive Cancer Center

    Sacramento, California, United States

  • California Pacific Medical Center-Pacific Campus

    San Francisco, California, United States

  • Palo Alto Medical Foundation-Santa Cruz

    Santa Cruz, California, United States

  • Palo Alto Medical Foundation-Sunnyvale

    Sunnyvale, California, United States

  • City of Hope Upland

    Upland, California, United States

  • John Muir Medical Center-Walnut Creek

    Walnut Creek, California, United States

  • Uchealth University of Colorado Hospital

    Aurora, Colorado, United States

  • Adventhealth Porter

    Denver, Colorado, United States

  • Uchealth - Cherry Creek

    Denver, Colorado, United States

  • Grand Valley Oncology

    Grand Junction, Colorado, United States

  • Banner North Colorado Medical Center

    Greeley, Colorado, United States

368 more sites on the registry record.ClinicalTrials.gov ↗

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
16 Nov 2022
Primary completion
31 Oct 2027
Completion
31 Oct 2027
Last update posted
24 Jun 2026
Registered enrollment
360
Registry id
NCT05256225

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.