Study to Evaluate the Effect of Metformin in the Prevention of HG in HR[+]/HER2[-] PIK3CA-mut Advanced BC Patients

PHASE2CompletedINTERVENTIONAL
Enrollment

69

Participants

Timeline

Start Date

October 23, 2020

Primary Completion Date

June 15, 2022

Study Completion Date

March 16, 2025

Conditions
Breast Cancer
Interventions
DRUG

Alpelisib

Alpelisib (BYL719): starting dose at 300 mg/QD.; 2 tablets once a day, oral administration, continuously during 28-day cycles until disease progression or unacceptable toxicity.

DRUG

Metformin

500 mg BID with breakfast and dinner. After 3 days, if no (GI) intolerance, increase to 1000 mg BID with breakfast and dinner. If not tolerated, reduce to prior tolerated dose. Titrate to 1000mg BID over a period of at least 4 additional days

DRUG

Fulvestrant

"fulvestrant (500 mg IM injections; loading dose 500mg every two weeks for the first month; then every 4 weeks as per standard of care \[SoC\].~Patients should be started on metformin and fulvestrant within 7 to 14 days prior to start on alpelisib (D1C1)"

DRUG

Letrozole

Letrozole 2.5 mg tablets, once daily, orally

DRUG

Exemestane

Exemestane 25 mg tablets, once daily, orally

DRUG

Vildagliptin

Vildagliptin 50 mg tablets, twice daily, orally with breakfast and dinner

DRUG

Tamoxifen

Tamoxifen 20 mg tablets, once daily, orally

Trial Locations (19)

Unknown

Hospital General Universitario de Alicante, Alicante

Hospital Universitari Vall D'Hebron, Barcelona

Institut Català d' Oncologia L'Hospitalet (ICO), Barcelona

Hospital Universitario de Basurto, Bilbao

Hospital Provincial de Castellón, Castellon

Hospital San Pedro de Alcántara, Cáceres

Onkologikoa, Donostia / San Sebastian

Hospital Universitario Clínico San Cecilio de Granada, Granada

Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran Canaria

Hospital Universitario de Leon, León

Hospital Beata María Ana, Madrid

Hospital Ruber Internacional, Madrid

Hospital Universitario Doce de Octubre, Madrid

Hospital Universitario Sanchinarro, Madrid

Hospital Clínico Universitario Virgen de la Arrixaca, Murcia

Complejo Hospitalario Universitario de Santiago (CHUS), Santiago de Compostela

Hospital Universitario Virgen del Rocio, Seville

Hospital Clinico Universitario de Valencia, Valencia

Instituto Valenciano de Oncología (IVO), Valencia

Sponsors

Collaborators (1)

All Listed Sponsors
collaborator

Novartis

INDUSTRY

lead

MedSIR

OTHER