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    Association details:
    Biomarker:PGR positive
    Cancer:HER2 Negative Breast Cancer
    Drug:letrozole (Aromatase inhibitor)
    Direction:Sensitive
    Evidence:
    Evidence Level:
    Sensitive: A2 - Guideline
    New
    Source:
    NCCN
    Excerpt:
    HER2 Negative Breast Cancer: Invasive Breast Cancer…SYSTEMIC THERAPY FOR ER - AND/OR PR - POSITIVE RECURRENT OR STAGE IV (M1) DISEASE…HER2-Negative and Postmenopausal or Premenopausal Receiving Ovarian Ablation or Suppression…First-Line Therapy...Non-steroidal aromatase inhibitor (anastrozole, letrozole)...
    Evidence Level:
    Sensitive: C2 – Inclusion Criteria
    New
    Source:
    clinicaltrials.gov
    Title:

    A Randomized Study Comparing the Immune Modulation Effect of Ribociclib, Palbociclib, and Abemaciclib in ER+/HER2- EBC

    Excerpt:
    ...- Patient has a histologically and/or cytologically confirmed diagnosis of estrogen-receptor positive and/or progesterone receptor positive breast cancer based on the most recently analyzed tissue sample and all tested by local laboratory....
    Trial ID:
    ORACLE-RIPA
    Evidence Level:
    Sensitive: C2 – Inclusion Criteria
    New
    Source:
    clinicaltrials.gov
    Title:

    Dose Escalation Study of LEE011 in Combination With Buparlisib and Letrozole in HR+, HER2-negative Post-menopausal Women With Advanced Breast Cancer.

    Excerpt:
    ...Patient has a histologically and/or cytologically confirmed diagnosis of estrogen-receptor positive and/or progesterone receptor positive breast cancer by local laboratory....
    Trial ID:
    LeeBLet
    More C2 evidence
    Evidence Level:
    Sensitive: C2 – Inclusion Criteria
    New
    Source:
    clinicaltrials.gov
    Title:

    Neo-adjuvant Chemotherapy With Letrozole in Patients With Estrogen Receptor Positive/HER-2 Negative Breast Cancer

    Excerpt:
    ......
    Trial ID:
    NeoChAI
    Evidence Level:
    Sensitive: C2 – Inclusion Criteria
    New
    Source:
    clinicaltrials.gov
    Title:

    Neoadjuvant Endocrine Therapy in Breast Cancer

    Excerpt:
    ...ER-positive (≥50%), PgR-positive (≥50% ), HER2-negative, and previously untreated, non-metastatic primary invasive BC....
    Trial ID:
    NCT03397537
    Evidence Level:
    Sensitive: C2 – Inclusion Criteria
    New
    Source:
    clinicaltrials.gov
    Title:

    Panobinostat and Letrozole in Treating Patients With Metastatic Breast Cancer

    Excerpt:
    ......
    Trial ID:
    NCT01105312