Lenvatinib Plus Chemotherapy for pNET Liver Metastases (LEN-pNET)
A Study of Second-Line Treatment Response and Resistance Mechanisms in Pancreatic Neuroendocrine Tumors With Liver Metastases Based on cfDNA and Single-Cell PBMC Multi-omics
This prospective, non-randomized, concurrent parallel-controlled study will evaluate treatment response and resistance mechanisms in patients with pancreatic neuroendocrine tumors with liver metastases (pNET-LM) receiving second-line systemic therapy after failure of first-line treatment.
Eligible patients will receive either lenvatinib combined with chemotherapy or chemotherapy alone according to the study protocol and clinical treatment strategy. The clinical efficacy and safety of the two treatment strategies will be evaluated using objective response rate (ORR), progression-free survival (PFS), overall survival (OS), and adverse events.
Peripheral blood samples will be collected before treatment, during early treatment, and at disease progression. Circulating cell-free DNA (cfDNA) and peripheral blood mononuclear cells (PBMCs) will be analyzed to investigate molecular and immune changes associated with treatment response, primary resistance, and acquired resistance. The study aims to identify potential biomarkers for predicting treatment response and to improve understanding of resistance mechanisms in pNET-LM.
Studieoversikt
Status
Intervensjon / Behandling
Studietype
Registrering (Antatt)
Fase
- Fase 2
Kontakter og plasseringer
Studiesteder
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Beijing Municipality
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Beijing, Beijing Municipality, Kina, 100000
- Rekruttering
- Chinese Academy of Medical Sciences，Peking Union Medical College Hospital
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Ta kontakt med:
- Jiayue Li
- Telefonnummer: 86+010-6915687
- E-post: 1624271942@qq.com
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Inclusion Criteria:
- Age 18 to 75 years.
- Histologically or cytologically confirmed pancreatic neuroendocrine tumor.
- Radiologically confirmed liver metastases.
- Disease progression or treatment failure after first-line systemic therapy, with eligibility for second-line treatment.
- At least one measurable lesion according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
- Adequate hematologic, hepatic, and renal function as assessed by the investigator.
- Life expectancy of at least 12 weeks.
- Ability to understand and willingness to sign a written informed consent form.
Exclusion Criteria:
- Poorly differentiated neuroendocrine carcinoma or neuroendocrine tumor originating from a site other than the pancreas.
- Previous treatment with lenvatinib.
- Uncontrolled or clinically significant cardiovascular disease, including uncontrolled hypertension.
- Active severe infection or other uncontrolled serious systemic disease.
- Known central nervous system metastases that are symptomatic or uncontrolled.
- Pregnancy or breastfeeding.
- Participation in another interventional clinical study that may interfere with the outcomes of this study.
- Any other condition that, in the opinion of the investigator, may make the participant unsuitable for participation in this study.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Ikke-randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Aktiv komparator: Chemotherapy Alone
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Chemotherapy will be administered according to the study protocol and clinical characteristics of the participant. The chemotherapy regimen may include an etoposide-platinum regimen or capecitabine plus temozolomide, as specified in the study protocol. |
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Eksperimentell: Lenvatinib Plus Chemotherapy
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Lenvatinib will be administered as part of second-line treatment in combination with chemotherapy according to the study protocol. |
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Objective Response Rate (ORR)
Tidsramme: From treatment initiation until disease progression, death, or up to 24 months
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Objective response rate is defined as the proportion of participants who achieve a complete response (CR) or partial response (PR) as their best overall response, as assessed according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. |
From treatment initiation until disease progression, death, or up to 24 months
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Progression-Free Survival (PFS)
Tidsramme: From treatment initiation until disease progression or death, whichever occurs first, assessed up to 24 months
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Progression-free survival is defined as the time from treatment initiation to the first documented disease progression according to RECIST version 1.1 or death from any cause, whichever occurs first. |
From treatment initiation until disease progression or death, whichever occurs first, assessed up to 24 months
|
Samarbeidspartnere og etterforskere
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Antatt)
Studiet fullført (Antatt)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- NET001
Plan for individuelle deltakerdata (IPD)
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Legemiddel- og utstyrsinformasjon, studiedokumenter
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