Reference Detail

Ref Type

Journal Article

PMID

(27217440)

Authors

Olow A, Mueller S, Yang X, Hashizume R, Meyerowitz J, Weiss W, Resnick AC, Waanders AJ, Stalpers LJ, Berger MS, Gupta N, James CD, Petritsch CK, Haas-Kogan DA

Title

BRAF Status in Personalizing Treatment Approaches for Pediatric Gliomas.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research	22	21	2016 Nov 01	5312-5321	Clin Cancer Res

URL

Abstract Text

Alteration of the BRAF/MEK/MAPK pathway is the hallmark of pediatric low-grade gliomas (PLGGs), and mTOR activation has been documented in the majority of these tumors. We investigated combinations of MEK1/2, BRAFV600E and mTOR inhibitors in gliomas carrying specific genetic alterations of the MAPK pathway.We used human glioma lines containing BRAFV600E (adult high-grade: AM-38, DBTRG, PLGG: BT40), or wild-type BRAF (pediatric high-grade: SF188, SF9427, SF8628) and isogenic systems of KIAA1549:BRAF-expressing NIH/3T3 cells and BRAFV600E-expressing murine brain cells. Signaling inhibitors included everolimus (mTOR), PLX4720 (BRAFV600E), and AZD6244 (MEK1/2). Proliferation was determined using ATP-based assays. In vivo inhibitor activities were assessed in the BT40 PLGG xenograft model.In BRAFV600E cells, the three possible doublet combinations of AZD6244, everolimus, and PLX4720 exhibited significantly greater effects on cell viability. In BRAFWT cells, everolimus + AZD6244 was superior compared with respective monotherapies. Similar results were found using isogenic murine cells. In KIAA1549:BRAF cells, MEK1/2 inhibition reduced cell viability and S-phase content, effects that were modestly augmented by mTOR inhibition. In vivo experiments in the BRAFV600E pediatric xenograft model BT40 showed the greatest survival advantage in mice treated with AZD6244 + PLX4720 (P < 0.01).In BRAFV600E tumors, combination of AZD6244 + PLX4720 is superior to monotherapy and to other combinatorial approaches. In BRAFWT pediatric gliomas, everolimus + AZD6244 is superior to either agent alone. KIAA1549:BRAF-expressing tumors display marked sensitivity to MEK1/2 inhibition. Application of these results to PLGG treatment must be exercised with caution because the dearth of PLGG models necessitated only a single patient-derived PLGG (BT40) in this study. Clin Cancer Res; 22(21); 5312-21. ©2016 AACR.

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
BRAF V600E	high grade glioma	predicted - sensitive	Everolimus + Selumetinib	Preclinical - Cell line xenograft	Actionable	In a preclinical study, Selumetinib (AZD6244) and Afinitor (everolimus) synergistically inhibited growth and induced apoptosis in glioma cell lines in culture, resulted in prolonged survival in cell line xenograft models (PMID: 27217440).	27217440
BRAF wild-type	high grade glioma	predicted - sensitive	Everolimus + Selumetinib	Preclinical - Cell culture	Actionable	In a preclinical study, Afinitor (everolimus) and Selumetinib (AZD6244) synergistically inhibited growth and induced apoptosis in glioma cell lines in culture (PMID: 27217440).	27217440
BRAF V600E	high grade glioma	predicted - sensitive	PLX4720 + Selumetinib	Preclinical - Cell line xenograft	Actionable	In a preclinical study, Selumetinib (AZD6244) and PLX4720 synergistically inhibited growth and induced apoptosis in glioma cell lines in culture, resulted in prolonged survival in cell line xenograft models (PMID: 27217440).	27217440
BRAF V600E	high grade glioma	predicted - sensitive	Everolimus + PLX4720	Preclinical - Cell culture	Actionable	In a preclinical study, Afinitor (everolimus) and PLX4720 synergistically inhibited growth and induced apoptosis in glioma cell lines in culture (PMID: 27217440).	27217440