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Symbiotic-GYN-18: A Study to Learn About the Study Medicine Called PF-08634404 in Combination With Chemotherapy in Adult Participants With Advanced or Recurrent MMR-proficient Endometrial Cancer

2026年10月29日 更新者:Pfizer

AN INTERVENTIONAL PHASE 3, OPEN LABEL, RANDOMIZED STUDY TO EVALUATE EFFICACY AND SAFETY OF PF-08634404 IN COMBINATION WITH CHEMOTHERAPY VERSUS PEMBROLIZUMAB IN COMBINATION WITH CHEMOTHERAPY IN ADULT PARTICIPANTS WITH ADVANCED OR RECURRENT MISMATCH REPAIR PROFICIENT ENDOMETRIAL CANCER

This study is being conducted to assess whether the study medicine PF 08634404, given in combination with chemotherapy, improves outcomes compared with another medicine called pembrolizumab plus chemotherapy. Chemotherapy is a type of cancer treatment that uses medicines to destroy cancer cells or stop them from growing.

Our bodies have a built-in DNA "spell-checker," called the mismatch repair (MMR) system, that fixes genetic mistakes. In most endometrial cancers, this system works normally, and these cancers are called MMR-proficient (pMMR). However, pMMR tumors are harder for the immune system to recognize and attack. When endometrial cancer has spread beyond the uterus or comes back after previous treatment, it is called advanced or recurrent endometrial cancer. This study is for adults with mismatch repair-pMMR advanced or recurrent endometrial cancer.

Participants must meet key criteria, including:

  • Women who are 18 years or older, and not pregnant at the time of joining the study
  • pMMR endometrial cancer only
  • Measurable Stage III disease, Stage IV disease (with or without measurable disease) per FIGO staging, a system doctors use to describe how far cancer has spread in the body, or recurrent (with or without measurable disease) endometrial cancer
  • Has not received chemotherapy except for chemotherapy given after the main surgery and more than 6 months before relapse
  • Be in good enough health to receive study treatment. Approximately 600 adult women will be enrolled. Each participant will be randomly assigned (like a flip of the coin) to one of two treatment groups, with about half in each group. The study is open, meaning both the doctors and participants know what treatment is being given. Participants will receive their assigned treatment through intravenous infusions (medicine is given directly into a vein). The treatment will be given in cycles.

Experimental Group will receive new study medicine called PF-08634404 plus chemotherapy. It will be followed by PF 08634404 alone for up to 2 years (35 cycles).

Control Group will receive an approved medicine called pembrolizumab plus chemotherapy. It will be followed by pembrolizumab alone for up to 2 years (20 cycles).

The study will include regular visits for:

  • Participants will have regular visits to the study site for treatment, health checks, and tests.
  • After stopping treatment, participants will come for a final visit within a month to check their health and review any reactions.
  • Follow-up will continue every 12 weeks by phone or in person or by reviewing health records. This helps check health and any new treatments.
  • Tests will be done every 9 weeks during the first 104 weeks to see how the cancer is responding. After that, tests will be done every 12 weeks.

調査の概要

研究の種類

介入

入学 (推定)

600

段階

  • フェーズ 3

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究場所

    • Florida
      • Jupiter、Florida、アメリカ、33458
        • 募集
        • Jupiter Medical Center/ Anderson Family Cancer Institute
      • Orlando、Florida、アメリカ、32806
        • 募集
        • Orlando Health Cancer Institute
      • Orlando、Florida、アメリカ、32806
        • 募集
        • Orlando Health Orlando Regional Medical Center
      • Orlando、Florida、アメリカ、32806
        • 募集
        • Orlando Health Winnie Palmer Hospital for Women & Babies
      • Orlando、Florida、アメリカ、32806
        • 募集
        • Orlando Health Ambulatory Care Center
    • Minnesota
      • Coon Rapids、Minnesota、アメリカ、55433
        • 募集
        • Minnesota Oncology Hematology, PA
      • Edina、Minnesota、アメリカ、55435
        • 募集
        • Minnesota Oncology Hematology, PA
      • Maple Grove、Minnesota、アメリカ、55369
        • 募集
        • Minnesota Oncology Hematology, PA
      • Maplewood、Minnesota、アメリカ、55109
        • 募集
        • Minnesota Oncology Hematology, PA
      • Woodbury、Minnesota、アメリカ、55125
        • 募集
        • Minnesota Oncology Hematology, PA
    • Nevada
      • Reno、Nevada、アメリカ、89511
        • 募集
        • The Center of Hope
    • New York
      • Albany、New York、アメリカ、12206
        • まだ募集していません
        • New York Oncology Hematology
      • White Plains、New York、アメリカ、10601
        • 募集
        • White Plains Hospital
    • Ohio
      • Centerville、Ohio、アメリカ、45459
        • 募集
        • Miami Valley Hospital South
    • Oregon
      • Happy Valley、Oregon、アメリカ、97015
        • 募集
        • Northwest Cancer Specialists, P.C.
      • Portland、Oregon、アメリカ、97227
        • 募集
        • Northwest Cancer Specialists, P.C.
      • Tigard、Oregon、アメリカ、97223
        • 募集
        • Northwest Cancer Specialists, P.C.
    • Tennessee
      • Nashville、Tennessee、アメリカ、37203
        • 募集
        • SCRI Oncology Partners
      • Nashville、Tennessee、アメリカ、37203
        • 募集
        • Sarah Cannon Research Institute- Pharmacy
    • Texas
      • Abilene、Texas、アメリカ、79606
        • 募集
        • Texas Oncology - West Texas
      • Amarillo、Texas、アメリカ、79124
        • 募集
        • Texas Oncology-West Texas
      • Austin、Texas、アメリカ、78731
        • 募集
        • Texas Oncology - Central South
      • Austin、Texas、アメリカ、78758
        • 募集
        • Texas Oncology - Central South
      • Austin、Texas、アメリカ、78745
        • 募集
        • Texas Oncology - Central South
      • El Paso、Texas、アメリカ、79902
        • 募集
        • Texas Oncology-West Texas
      • El Paso、Texas、アメリカ、79915
        • 募集
        • Texas Oncology - West Texas
      • El Paso、Texas、アメリカ、79938
        • 募集
        • Texas Oncology - West Texas
      • Harlingen、Texas、アメリカ、78550
        • 募集
        • Texas Oncology - Central South
      • Irving、Texas、アメリカ、75063
        • 募集
        • US Oncology Investigational Products Center (IPC)
      • McAllen、Texas、アメリカ、78503
        • 募集
        • Texas Oncology - Central South
      • Midland、Texas、アメリカ、79701
        • 募集
        • Texas Oncology-West Texas
      • Odessa、Texas、アメリカ、79761
        • 募集
        • Texas Oncology - West Texas
      • Waco、Texas、アメリカ、76712
        • 募集
        • Texas Oncology - Central South
      • Weslaco、Texas、アメリカ、78596
        • 募集
        • Texas Oncology - Central South
      • Wichita Falls、Texas、アメリカ、76310
        • 募集
        • Texas Oncology-West Texas
    • Virginia
      • Chesapeake、Virginia、アメリカ、23320
        • 募集
        • Virginia Oncology Associates
      • Newport News、Virginia、アメリカ、23606
        • 募集
        • Virginia Oncology Associates
      • Norfolk、Virginia、アメリカ、23502
        • 募集
        • Virginia Oncology Associates
      • Suffolk、Virginia、アメリカ、23435
        • 募集
        • Virginia Oncology Associates
      • Williamsburg、Virginia、アメリカ、23188
        • 募集
        • Virginia Oncology Associates
    • Washington
      • Vancouver、Washington、アメリカ、98684
        • 募集
        • Northwest Cancer Specialists, P.C.
    • Wisconsin
      • Hudson、Wisconsin、アメリカ、54016
        • 募集
        • Minnesota Oncology Hematology, P.A.
    • New South Wales
      • Campbelltown、New South Wales、オーストラリア、2560
        • まだ募集していません
        • GenesisCare - Campbelltown
    • Queensland
      • Toowoomba、Queensland、オーストラリア、4350
        • まだ募集していません
        • Toowoomba Hospital
    • Victoria
      • Frankston、Victoria、オーストラリア、3199
        • まだ募集していません
        • Bayside Health - Peninsula University Hospital
    • Shanghai Municipality
      • Shanghai、Shanghai Municipality、中国、200032
        • まだ募集していません
        • Fudan University Shanghai Cancer Center
      • Taichung、台湾、407
        • 募集
        • Taichung Veterans General Hospital
      • Taichung、台湾、404332
        • まだ募集していません
        • China Medical University Hospital
      • Fukushima、日本、960-1295
        • 募集
        • Fukushima Medical University Hospital
      • Niigata、日本、951-8566
        • 募集
        • Niigata Cancer Center Hospital
    • Hokkaido
      • Sapporo、Hokkaido、日本、060-0061
        • 募集
        • Sapporo Medical University Hospital
    • Hyōgo
      • Akashi、Hyōgo、日本、673-8558
        • 募集
        • Hyogo Cancer Center
    • Saitama
      • Hidaka、Saitama、日本、350-1298
        • まだ募集していません
        • Saitama Medical University International Medical Center
    • Tokyo
      • Koto-ku、Tokyo、日本、135-8550
        • 募集
        • Cancer Institute Hospital of JFCR

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年歳以上 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

女性

説明

Inclusion Criteria:

  • Women ≥18 years of age who are confirmed not pregnant at screening.
  • Histologically or cytologically confirmed endometrial cancer that is recurrent or advanced; carcinosarcomas are eligible but pure sarcomas are excluded.
  • Newly diagnosed FIGO Stage III disease with measurable disease per RECIST v1.1, newly diagnosed FIGO Stage IV disease with or without measurable disease, or recurrent disease with or without measurable disease for which curative treatment with surgery and/or radiotherapy is unlikely.
  • For participants with recurrent disease, prior adjuvant systemic anti-cancer therapy is allowed if relapse occurred more than 6 months after the last dose.
  • Must provide tumor tissue for prospective central assessment of MMR and p53 status.
  • Proficient mismatch repair (pMMR) endometrial cancer as determined by central testing.
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1.
  • Life expectancy of at least 12 weeks.
  • Adequate organ function as defined in the protocol.

Exclusion Criteria:

  • Prior systemic therapy for first-line advanced or recurrent endometrial cancer.
  • Prior immunotherapy or anti-angiogenic therapy.
  • Deficient mismatch repair (dMMR) endometrial cancer by central testing.
  • Active or untreated central nervous system (CNS) metastases; participants with previously treated and clinically stable brain metastases may be eligible if not requiring steroids and without evidence of progression.
  • Clinically significant risk of bleeding or fistula, including a history of severe bleeding disorders.
  • History of another malignancy within 3 years, except for cancers with negligible risk of recurrence or death.
  • History of allogeneic organ or hematopoietic stem cell transplantation; active autoimmune disease requiring systemic treatment within the past 2 years; or history of immunodeficiency
  • Interstitial lung disease, pneumonitis, or clinically significant pulmonary disease
  • Uncontrolled or significant cardiovascular, metabolic, renal, hepatic, or vascular disease
  • Active or uncontrolled infection.
  • Recent major surgery or severe trauma within protocol-defined washout periods.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:処理
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
実験的:PF-08634404 plus Chemotherapy

PF-08634404 plus Chemotherapy, followed by PF-08634404 maintenance therapy

Solution for IV infusion

Solution for IV infusion

アクティブコンパレータ:Pembrolizumab plus Chemotherapy

Pembrolizumab plus Chemotherapy, followed by Pembrolizumab maintenance therapy

Solution for IV infusion

Solution for IV infusion

他の名前:
  • キルトルーダ

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Progression-Free Survival (PFS) using RECIST v1.1 as assessed by Blinded Independent Central Review (BICR)
時間枠:Approximately 36 months

PFS by BICR is defined as the time from the date of randomization to the date of first documented disease progression per RECIST v1.1 as assessed by BICR, or death due to any cause, whichever occurs first.

Approximately 36 months

二次結果の測定

結果測定
メジャーの説明
時間枠
Overall Survival (OS)
時間枠:Approximately 56 months

OS is defined as the time from the date of randomization to the date of death due to any cause.

Approximately 56 months
PFS using RECIST v1.1 as assessed by investigator
時間枠:Approximately 36 months

PFS by investigator is defined as the time from the date of randomization to the date of first documented disease progression per RECIST v1.1 as assessed by investigator, or death due to any cause, whichever occurs first. PFS by investigator will be analyzed with the same methodology as for PFS by BICR.

Approximately 36 months
Objective Response Rate (ORR) as assessed by BICR and investigator
時間枠:Approximately 56 months

Proportion of participants with confirmed Complete Response (CR) or Partial Response (PR) per RECIST v1.1, assessed by BICR and by investigator

Approximately 56 months
Duration of Response (DoR) as assessed by BICR and investigator
時間枠:Approximately 56 months

Time from first documented CR or PR to disease progression or death, per RECIST v1.1, assessed by BICR and by investigator

Approximately 56 months
Number of participants with treatment-emergent adverse events
時間枠:Through end of the study and up to approximately 56 months

AEs as characterized by type, frequency, intensity as graded by NCI CTCAE version 5.0, timing, seriousness, and relationship to study intervention(s)

Through end of the study and up to approximately 56 months
Number of participants with laboratory abnormalities
時間枠:Through end of the study and up to approximately 56 months

Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing. For laboratory tests without CTCAE grade definitions, results will be categorized as normal, high, low, or not done and be listed.

Through end of the study and up to approximately 56 months
Serum concentrations of PF-08634404
時間枠:Through end of the study and up to approximately 56 months

Pre-dose and post-dose serum concentrations of PF-08634404

Through end of the study and up to approximately 56 months
Incidence of ADA against PF-08634404
時間枠:Through end of the study and up to approximately 56 months

Incidence of anti-drug antibodies (ADA) to PF-08634404

Through end of the study and up to approximately 56 months
Change from baseline in the global health status/quality of life (QoL) and physical functioning scale of the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30)
時間枠:Baseline, up to approximately 56 months

The EORTC QLQ-C30 is a questionnaire for quantitative measure of health-related quality of life pertinent to participants with a broad range of cancers who are participating in international clinical trials. The core instrument is a 30-item questionnaire consisting of the following:

  • 5 Functional scales (physical, role, cognitive, emotional, social)
  • 3 Symptom scales (fatigue, pain, nausea, and vomiting, shortness of breath, loss of appetite, sleep disturbance, constipation, diarrhea) and financial impact of the disease
  • 2 Global items (global health status, overall HRQoL) All of the scales and single-item measures range in score from 0 to 100. High scale score represents a higher response level.
Baseline, up to approximately 56 months
Change from baseline in the back pain/pelvis pain, GI symptoms, and urological symptoms scales of the EORTC QLQ EN24
時間枠:Baseline, up to approximately 56 months

The Endometrial Cancer Module (EORTC QLQ-EN24) is a disease-specific measure that is supplemental to the EORTC QLQ-C30 to capture patient's experiences with endometrial cancer-specific symptoms and impacts. The recall period is the past week. The 24-item questionnaire consists of the following:

  • Symptom scales/items (Lymphoedema, urological symptoms, gastrointestinal symptoms, poor body image, and sexual/vaginal problems, pain in back and pelvis, tingling/numbness, muscular pain, hair loss, and taste change)
  • Functional scales (sexual interest, sexual activity, and sexual enjoyment)

Higher scores for functional scales represent high level of functioning, while higher scores for symptoms scales represent higher levels of symptoms/problems.

Baseline, up to approximately 56 months
Time to definitive deterioration in the global health status/QoL and physical functioning scale of the EORTC QLQ-C30.
時間枠:Approximately 56 months

The European Organisation for Research and Treatment of Cancer Quality of Life-Core 30 Questionnaire (EORTC QLQ-C30), is a validated 30-item self-administered core questionnaire designed to assess HRQoL, functioning, and symptoms in all cancer patients or survivors.

Time to deterioration is defined as time from baseline (defined as day 1 of cycle 1 before first application of maintenance therapy) to the date of the first clinically meaningful deterioration i.e. a decrease by ≥10 points for the functional scales and an increase by ≥ 10 points for the symptom scales or death in:

  • Physical functioning score
  • Role functioning score
Approximately 56 months

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

捜査官

  • スタディディレクター:Pfizer CT.gov Call Center、Pfizer

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年10月14日

一次修了 (推定)

2029年6月1日

研究の完了 (推定)

2031年1月30日

試験登録日

最初に提出

2026年5月5日

QC基準を満たした最初の提出物

2026年5月5日

最初の投稿 (実際)

2026年5月11日

学習記録の更新

投稿された最後の更新 (実際)

2026年10月30日

QC基準を満たした最後の更新が送信されました

2026年10月29日

最終確認日

2026年10月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • C6461018
  • 2026-525584-40-00 (レジストリ識別子:CTIS (EU))
  • GOG-3145 (その他の識別子:APGOT)
  • ENGOT-en37 (その他の識別子:APGOT)
  • APGOT-EN6 (その他の識別子:APGOT)

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

はい

IPD プランの説明

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

はい

米国FDA規制機器製品の研究

いいえ

米国で製造され、米国から輸出された製品。

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。

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