Determinants of Acquired Endocrine Resistance in Metastatic Breast Cancer: A Pilot Study (ENDO-RESIST)
Studieoversikt
Status
Status
Forhold
Forhold
Detaljert beskrivelse
Endocrine therapies have been associated with an overall survival benefit in breast cancer and are the preferred initial treatment approach in patients with ER+, HER2- metastatic breast cancer. Unfortunately, resistance to endocrine therapies eventually develops in the metastatic setting and metastatic breast cancer remains an incurable disease. Endocrine resistance may develop as a result of alterations in estrogen signaling and metabolism pathways, which may be modulated by gut bacteria. In addition, genomic profiling of archival tissues and circulating tumor DNA (ctDNA) in ER+ breast cancer has identified multiple somatic molecular alterations that may mediate response to endocrine therapies.
This study is designed to identify markers of endocrine resistance in ctDNA and the gut microbiome in patients with ER+ HER2- metastatic breast cancer.
Studietype
Studietype
Registrering (Forventet)
Registrering
Kontakter og plasseringer
Studiekontakt
Studiekontakt
- Navn: Rossanna C. Pezo, MD/PhD
- Telefonnummer: 416-480-4757
- E-post: rossanna.pezo@sunnybrook.ca
Studiesteder
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Ontario
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Toronto, Ontario, Canada, M4N 3M5
- Rekruttering
- Sunnybrook Health Sciences Centre
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Ta kontakt med:
- Rossanna C. Pezo, MD/PhD
- Telefonnummer: 416-480-4757
- E-post: rossanna.pezo@sunnybrook.ca
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-
Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
Inclusion Criteria:
- Sign written and voluntary informed consent
- Histological confirmation of advanced ER positive and HER2 negative breast cancer.
- Adult patients at least 18 years of age
- ECOG performance status equal to 0 or 1
- Able to provide written informed consent
- Must be willing to provide blood for ctDNA analysis on study enrollment and at specified study time points
- Must be willing and able to perform stool sample collection
- Patients must be suitable, as per their treating physician, for initiation of first line endocrine therapy with an aromatase inhibitor and a CDK 4/6 inhibitor for metastatic disease
Exclusion Criteria:
- Prior treatment with CDK 4/6 inhibitors in the neoadjuvant or adjuvant setting
- Use of targeted therapies other than endocrine therapies alone in the neoadjuvant or adjuvant setting
- Relapse on prior endocrine therapy or within 6 months of discontinuation of prior adjuvant endocrine therapy
- History of inflammatory bowel disease, chronic diarrhea or malabsorption syndromes and significant prior bowel resection as judged by the study investigator
- Use of immunosuppressants including steroids within the previous 4 weeks of planned Cycle 1 Day 1 treatment
Studieplan
Hvordan er studiet utformet?
Designdetaljer
Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Time to treatment failure
Tidsramme: 12 months
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Time from first treatment on study (standard of care aromatase inhibitor and a CDK 4/6 inhibitor) until the date of treatment discontinuation
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12 months
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Correlation between specific mutations in ctDNA and in archival tissue samples (where available from prior testing) with time to treatment failure
Tidsramme: 12 months
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Identification of mutations in archival tissue samples (where available from prior testing) and sequencing of ctDNA using next generation sequencing panel
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12 months
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Diversity and composition of the gut microbiome in patients with ER+ HER2- metastatic breast cancer
Tidsramme: 12 months
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Analysis of the gut microbiome via 16S rRNA sequencing and metagenomic sequencing of fecal samples at baseline and at development of progressive disease
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12 months
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Dietary factors and composition of the gut microbiome
Tidsramme: 14 days
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Assessment of food intake via dietary questionnaire and correlation with diversity and composition of the gut microbiome
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14 days
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Overall survival
Tidsramme: 2 years
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Time from start of treatment until death
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2 years
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Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Etterforskere
Etterforskere
- Hovedetterforsker: Rossanna C. Pezo, MD/PhD, Sunnybrook Health Sciences Centre
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Studiestart
Primær fullføring (Forventet)
Primær fullføring
Studiet fullført (Forventet)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
Andre studie-ID-numre
- ENDO-RESIST
Plan for individuelle deltakerdata (IPD)
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