Reference Detail

Ref Type

PMID

Authors

Shahneen Sandhu, Gerhardt Attard, David Olmos, Eleni Efstathiou, Elena Castro, Dana E. Rathkopf, Matthew Raymond Smith, Guilhem Roubaud, Eric Jay Small, Andrea Juliana Gomes, Marniza Saad, Deniz Tural, Shibu Thomas, Karen Urtishak, Michael Gormley, Gary Mason, Brooke Diorio, George C. Wang, Angela Lopez-Gitlitz, Kim N. Chi

Title

Gene-by-gene analysis in the MAGNITUDE study of niraparib (NIRA) with abiraterone acetate and prednisone (AAP) in patients (pts) with metastatic castration-resistant prostate cancer (mCRPC) and homologous recombination repair (HRR) gene alterations.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Journal of Clinical Oncology	40	no. 16_suppl

URL

https://ascopubs.org/doi/10.1200/JCO.2022.40.16_suppl.5020

Abstract Text

Background: NIRA + AAP significantly improved outcomes in pts with mCRPC and HRR gene alterations in the Phase 3 MAGNTUDE study. There is a paucity of data supporting use of PARP inhibitors in pts with HRR gene alterations other than BRCA1/2. We report on the efficacy of NIRA + AAP in pts with mCRPC and a qualifying single gene HRR alteration other than BRCA1/2. Methods: A pre-specified analysis was undertaken of the primary endpoint (radiographic progression-free survival [rPFS] by BICR), secondary endpoints (time to cytotoxic chemotherapy [TCC], time to symptomatic progression [TSP], overall survival [OS]), as well as time to PSA progression (TPSA) and overall response rate (ORR) across 186 pts (91 randomized to NIRA + AAP, 95 to PBO + AAP) with an alteration in the ATM, BRIP1, CDK12, CHEK2, FANCA, HDAC2, or PALB2 gene (excluding cooccurring alterations). This analysis of individual alterations was not powered for formal statistical inference. Given the rarity of some alterations, groups based on functional similarity are also presented. Results: (Table). Pts with PALB2 or CHEK2 alterations had consistent improvement across all endpoints. In pts with ATM alterations benefit was observed in TCC, TSP, TPSA and ORR. There was benefit only in TPSA and ORR for pts with CDK12 alterations. When combined into functional groups, pts with an alteration in the HRR-Fanconi pathway (BRIP1, FANCA, and PALB2) as well as pts with a HRR associated alteration (CHEK2 or HDAC2) showed improvement in all endpoints. Conclusions: These data support the overall conclusions of the MAGNITUDE primary analysis and support benefit of NIRA + AAP in pts with HRR mutations beyond BRCA1/2. Clinical trial information: NCT03748641.

Filtering

Case insensitive filtering will display rows if any text in any cell matches the filter term
Use simple literal full or partial string matches
Separate multiple filter terms with a space. Any order may be used (i. e. a b c and c b a are equivalent )
Filtering will only apply to rows that are already loaded on the page. Filtering has no impact on query parameters.
Use quotes to match on a longer phrase with spaces (i.e. "mtor c1483f")

Sorting

Generally, the default sort order for tables is set to be first column ascending; however, specific tables may set a different default sort order.
Click on any column header arrows to sort by that column
Hold down the Shift key and click multiple columns to sort by more than one column. Be sure to set ascending or descending order for a given column before moving on to the next column.

Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
CHEK2 inact mut	prostate cancer	predicted - sensitive	Abiraterone + Niraparib + Prednisone	Phase III	Actionable	In a Phase III trial (MAGNITUDE), Zejula (niraparib) in combination with Zytiga (abiraterone) and Adasone (prednisone) (AAP) improved radiographic progression-free survival (HR 0.64) compared to placebo and AAP in patients with metastatic castration-resistant prostate cancer harboring inactivating mutations in the homologous recombination repair (HRR)-associated genes (CHEK2 or HDAC2), with a HR of 0.66 in patients with CHEK2 mutations (J Clin Oncol 40, no. 16_suppl (June 01, 2022) 5020; NCT03748641).	detail...