Denne siden ble automatisk oversatt og nøyaktigheten av oversettelsen er ikke garantert. Vennligst referer til engelsk versjon for en kildetekst.

Neoadjuvant Radiotherapy and Surgery for High-Risk Localized Ewing Sarcoma

27. mai 2026 oppdatert av: Xie Lu, Peking University People's Hospital

An Observational Study on the Safety and Efficacy of Neoadjuvant Concurrent Chemoradiotherapy Sequential Surgery for High-Risk Localized Ewing Sarcoma

This is a single-center, single-arm, prospective observational study to evaluate the long-term local control rate, safety, and efficacy of preoperative neoadjuvant radiotherapy (36-45 Gy) followed by sequential radical surgery and postoperative chemotherapy in patients with high-risk, resectable localized Ewing sarcoma.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Detaljert beskrivelse

Patients diagnosed with high-risk localized Ewing sarcoma will routinely receive standard neoadjuvant chemotherapy. For patients with resectable tumors, preoperative neoadjuvant radiotherapy at a dose of 36-45 Gy will be administered, followed by definitive surgery and subsequent adjuvant chemotherapy. This study does not interfere with standard clinical management and focuses on collecting follow-up data to observe the local recurrence-free survival (LRFS), wound complications, and surgical margin status.

Studietype

Observasjonsmessig

Registrering (Antatt)

55

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

  • Kina
      • Beijing, Kina
        • Peking University People's Hospital, Beijing, Beijing 100044
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Barn
  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Initial treated ewing sarcoma patients in PKUPH and later would recieve definitivesurgery in PKUPH with complete clinical materials.

Beskrivelse

Inclusion Criteria:

  1. The subject or their legal representative signs the written informed consent prior to enrollment.
  2. Age <= 55 years old.
  3. Histologically confirmed Ewing sarcoma, with FET family (including EWSR1 or FUS) gene rearrangement confirmed by FISH or NGS. Clear FET-non ETS fusion cases are excluded.
  4. Deemed difficult to achieve a satisfactory surgical margin by 2 or more senior musculoskeletal oncologists.
  5. ECOG Performance Status: 0-1.
  6. Expected life expectancy >= 3 months.
  7. Women of childbearing potential must have a negative pregnancy test within 1 week prior to enrollment and agree to use contraception; male subjects must agree to use contraception or have undergone surgical sterilization during the study.

Exclusion Criteria:

  1. No opportunity for surgical resection after neoadjuvant chemotherapy.
  2. Extensive metastasis with no indication for local surgical resection.
  3. Uncontrolled concurrent medical conditions.
  4. Prior radiotherapy to the surgical site during front-line treatment.
  5. History of other malignant tumors within the past 5 years.
  6. Inability to cooperate with preoperative neoadjuvant radiotherapy (e.g., due to psychiatric factors).
  7. Any condition that, in the investigator's judgment, might harm the patient or prevent compliance with study requirements.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Local Recurrence-Free Survival (LRFS)
Tidsramme: From the date of surgery up to the date of first documented local recurrence or death from any cause, assessed up to 5 years post-surgery.
Time from the date of surgery to the first documented local recurrence or death from any cause.
From the date of surgery up to the date of first documented local recurrence or death from any cause, assessed up to 5 years post-surgery.
Wound Healing Status
Tidsramme: Postoperative week 2.
Evaluation of surgical wound healing grade (Grade A/B/C) according to clinical criteria.
Postoperative week 2.
Surgical Margin Status
Tidsramme: At the time of pathological evaluation, typically within 7 to 14 days post-surgery.
Pathological evaluation of margins (R0/R1/R2) and the distance to the closest margin.
At the time of pathological evaluation, typically within 7 to 14 days post-surgery.

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Icidence of Adverse Events (Safety)
Tidsramme: From enrollment up to 30 days after the completion of all treatments.
Grading and frequency of adverse events, particularly wound complications and infections, graded by CTCAE v5.0.
From enrollment up to 30 days after the completion of all treatments.
Event-Free Survival (EFS)
Tidsramme: From the date of surgery up to the date of first documented disease progression, recurrence, or death from any cause, assessed up to 5 years post-surgery.
Time from surgery to disease progression, recurrence, or death from any cause.
From the date of surgery up to the date of first documented disease progression, recurrence, or death from any cause, assessed up to 5 years post-surgery.
Overall Survival (OS)
Tidsramme: From the date of surgery up to the date of death from any cause, assessed up to 5 years post-surgery.
Time from surgery to death from any cause.
From the date of surgery up to the date of death from any cause, assessed up to 5 years post-surgery.

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Peking University People's Hospital

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. juni 2026

Primær fullføring (Antatt)

1. desember 2027

Studiet fullført (Antatt)

1. desember 2027

Datoer for studieregistrering

Først innsendt

15. mai 2026

Først innsendt som oppfylte QC-kriteriene

27. mai 2026

Først lagt ut (Faktiske)

2. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

2. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

27. mai 2026

Sist bekreftet

1. mai 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • PKUPH-sarcoma 25

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Abonnere