Melanocortin Receptor-4 Gene Polymorphisms in Glioblastoma Patients Treated with Concomitant Radio-Chemotherapy.

Abstract:

:Melanocortins are peptides with well-recognized antiinflammatory and neuroprotective activity. No data are currently available on melanocortin receptor-4 (MC4R) gene polymorphisms and tumors, including glioblastomas (GBMs), or their relationship with radiotherapy or chemotherapy. The aim of this study was to evaluate the possible predictive/prognostic role of the MC4R SNPs on GBM patients. Fifty-five patients with a proven diagnosis of GBM, treated with radiotherapy and temozolomide, were consecutively enrolled. MC4R gene SNPs (rs17782313, rs489693, rs8087522, rs17700633) were analyzed by a validated TaqMan® SNP genotyping assays. Univariate and multivariate analyses were performed. A P < 0.0125 (Bonferroni's correction) was considered significant ( Clinicaltrial.gov identifier NCT02458508). The median progression-free survival (PFS) and median overall survival (OS) of these patients were 9.54 (95% CI 5.4-14.3) months and 24.9 (95% CI 17.8-34.6) months, respectively. The MC4R rs489693 AA genotype was significantly associated with a shorter PFS and OS. Indeed, with regard to PFS, patients harboring the rs489693 AA genotype had a median PFS of 2.99 months whereas patients with AC/CC genotypes had a median PFS of 10.82 months (P = 0.009). Interestingly, the rs489693 AA patients also had a lower median OS as compared with the median OS of the AC/CC genotypes (10.75 vs. 29.5 months, respectively, P = 0.0001). This study suggests that the MC4R rs489693 AA genotype is significantly associated with a shorter PFS and OS in patients treated with radiotherapy and temozolomide. These findings represent a relevant effort to identify novel clinical markers for RT-CT therapy in GBM to be validated in future pharmacogenetic clinical trials.

journal_name

Mol Neurobiol

journal_title

Molecular neurobiology

authors

Pasqualetti F,Orlandi P,Simeon V,Cantarella M,Giuliani D,Di Desidero T,Gonnelli A,Delishaj D,Lombardi G,Sechi A,Sanson M,Zagonel V,Paiar F,Danesi R,Guarini S,Bocci G

doi

10.1007/s12035-017-0414-9

subject

Has Abstract

pub_date

2018-02-01 00:00:00

pages

1396-1404

issue

2

eissn

0893-7648

issn

1559-1182

pii

10.1007/s12035-017-0414-9

journal_volume

55

pub_type

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