# Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy

> **NCT03281902** · — · ACTIVE_NOT_RECRUITING · sponsor: **Mayo Clinic** · enrollment: 68 (actual)

## Conditions studied

- Advanced Breast Carcinoma
- Locally Advanced Breast Carcinoma
- Metastatic Breast Carcinoma
- Recurrent Breast Carcinoma
- Stage III Breast Cancer AJCC v7
- Stage IIIA Breast Cancer AJCC v7
- Stage IIIB Breast Cancer AJCC v7
- Stage IIIC Breast Cancer AJCC v7
- Stage IV Breast Cancer AJCC v6 and v7

## Interventions

- **PROCEDURE:** Biopsy
- **PROCEDURE:** Biospecimen Collection
- **OTHER:** Laboratory Biomarker Analysis

## Key facts

- **NCT ID:** NCT03281902
- **Lead sponsor:** Mayo Clinic
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2017-11-13
- **Primary completion:** 2026-03-04
- **Final completion:** 2026-03-04
- **Target enrollment:** 68 (ACTUAL)
- **Last updated:** 2025-03-06

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03281902

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03281902, "Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy". Retrieved via AI Analytics 2026-05-23 from https://api.ai-analytics.org/clinical/NCT03281902. Licensed CC0.

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