Molecular Profile Detail

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Profile Name RB1 loss
Gene Variant Detail

RB1 loss (loss of function)

Relevant Treatment Approaches HDAC Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PTEN loss RB1 loss triple-receptor negative breast cancer resistant Pictilisib Preclinical Actionable In a preclinical study, a triple-receptor negative breast cancer line harboring PTEN and RB1 loss was resistant to Pictilisib (GDC-0941) induced growth inhibition in culture (PMID: 27020857). 27020857
PTEN loss RB1 loss triple-receptor negative breast cancer no benefit Palbociclib + Pictilisib Preclinical Actionable In a preclinical study, the combination of Ibrance (palbociclib) and Pictilisib (GDC-0941) did not improve growth inhibition compared to single drug treatment in triple-receptor negative breast cancer cell lines harboring PTEN and RB1 loss in culture (PMID: 27020857). 27020857
PTEN loss RB1 loss triple-receptor negative breast cancer resistant Palbociclib Preclinical Actionable In a preclinical study, a triple-receptor negative breast cancer line harboring PTEN and RB1 loss was resistant to Ibrance (palbociclib) induced growth inhibition in culture (PMID: 27020857). 27020857
BRAF mut RB1 loss melanoma decreased response Palbociclib + Trametinib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line with a BRAF mutation and loss of RB1 demonstrated minimal sensitivity when treated with the combination of Ibrance (palbociclib) and Mekinist (trametinib) in culture (PMID: 27488531). 27488531
BRAF mut RB1 loss melanoma decreased response Trametinib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring a BRAF mutation and RB1 loss demonstrated reduced sensitivity when treated with Mekinist (trametinib) in culture (PMID: 27488531). 27488531
BRAF mut RB1 loss melanoma decreased response Palbociclib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring a BRAF mutation and loss of RB1 demonstrated a decreased response to Ibrance (palbociclib) treatment in culture when compared to treatment of melanoma cell lines wild-type for BRAF (PMID: 27488531). 27488531
Clinical Trial Phase Therapies Title Recruitment Status Covered Countries Other Countries
NCT04116541 Phase II Alectinib Cabozantinib Ribociclib + Siremadlin A Study Evaluating the Activity of Anti-cancer Treatments Targeting Tumor Molecular Alterations/Characteristics in Advanced / Metastatic Tumors. (MegaMOST) Recruiting FRA 0
NCT03360721 Phase II Abiraterone + Apalutamide + Prednisone Study of Apalutamide and Abiraterone Acetate in Castration-Resistant Bone Metastatic Prostate Cancer Patients Suspended USA 0
NCT02059213 Phase II Goserelin Palbociclib Bicalutamide Leuprolide A Phase II Study of Androgen Deprivation Therapy With or Without PD 0332991 in RB-Positive Metastatic Prostate Cancer Completed USA 0
NCT03356223 Phase II Abemaciclib Evaluation of ABEMACICLIB Monotherapy in Patients With Locally Advanced/Metastatic Head and Neck Cancer After Failure of Platinum and Cetuximab or Anti-EGFR-based Therapy and Harboring an Homozygous Deletion of CDKN2A, and/or an Amplification of CCND1 and/or of CDK6 (ABORL) Recruiting FRA 0
NCT04592237 Phase II Niraparib Cabazitaxel + Carboplatin + Cetrelimab Cetrelimab + Niraparib Cabazitaxel, Carboplatin, and Cetrelimab Followed by Niraparib With or Without Cetrelimab for the Treatment of Aggressive Variant Metastatic Prostate Cancer Recruiting USA 0
NCT02873975 Phase II Prexasertib A Study of LY2606368 (Prexasertib) in Patients With Solid Tumors With Replicative Stress or Homologous Repair Deficiency Active, not recruiting USA 0
NCT01976169 Phase I Ado-trastuzumab emtansine + Palbociclib Phase 1b Study of PD-0332991 in Combination With T-DM1(Trastuzumab-DM1) Completed USA 0
NCT04388852 Phase I DS-3201b + Ipilimumab DS3201 and Ipilimumab for the Treatment of Metastatic Prostate, Urothelial and Renal Cell Cancers Recruiting USA 0
NCT04469764 Phase II Abemaciclib + Anastrozole Abemaciclib + Letrozole Abemaciclib Abemaciclib for the Treatment of Recurrent Ovarian or Endometrial Cancer Recruiting USA 0
NCT04129151 Phase II Ganitumab + Palbociclib Palbociclib + Ganitumab In Ewing Sarcoma Active, not recruiting USA 0