2018
Spectrum and prevalence of genetic predisposition in medulloblastoma: a retrospective genetic study and prospective validation in a clinical trial cohort
WASZAK, Sebastian M.; Paul A. NORTHCOTT; Ivo BUCHHALTER; Giles W. ROBINSON; Christian SUTTER et al.Základní údaje
Originální název
Spectrum and prevalence of genetic predisposition in medulloblastoma: a retrospective genetic study and prospective validation in a clinical trial cohort
Autoři
WASZAK, Sebastian M.; Paul A. NORTHCOTT; Ivo BUCHHALTER; Giles W. ROBINSON; Christian SUTTER; Susanne GROEBNER; Kerstin B. GRUND; Laurence BRUGIERES; David T.W. JONES; Kristian W. PAJTLER; A. Sorana MORRISSY; Marcel KOOL; Dominik STURM; Lukas CHAVEZ; Aurelie ERNST; Sebastian BRABETZ; Michael HAIN; Thomas ZICHNER; Maia SEGURA-WANG; Joachim WEISCHENFELDT; Tobias RAUSCH; Balca R. MARDIN; Xin ZHOU; Cristina BACIU; Christian LAWERENZ; Jennifer A. CHAN; Pascale VARLET; Lea GUERRINI-ROUSSEAU; Daniel W. FULTS; Wieslawa GRAJKOWSKA; Peter HAUSER; Nada JABADO; Young-Shin RA; Karel ZITTERBART; Suyash S. SHRINGARPURE; Francisco M. DE LA VEGA; Carlos D. BUSTAMANTE; Ho-Keung NG; Arie PERRY; Tobey J. MACDONALD; Pablo H. DRIEVER; Anne E. BENDEL; Daniel C. BOWERS; Geoffrey MCCOWAGE; Murali M. CHINTAGUMPALA; Richard COHN; Timothy HASSALL; Gudrun FLEISCHHACK; Tone EGGEN; Finn WESENBERG; Maria FEYCHTING; Birgitta LANNERING; Joachim SCHUZ; Christoffer JOHANSEN; Tina V. ANDERSEN; Martin ROOSLI; Claudia E. KUEHNI; Michael GROTZER; Kristina KJAERHEIM; Camelia M. MONORANU; Tenley C. ARCHER; Elizabeth DUKE; Scott L. POMEROY; Redmond SHELAGH; Stephan FRANK; David SUMERAUER; Wolfram SCHEURLEN; Marina V. RYZHOVA; Till MILDE; Christian P. KRATZ; David SAMUEL; Jinghui ZHANG; David A. SOLOMON; Marco MARRA; Roland EILS; Claus R. BARTRAM; Katja von HOFF; Stefan RUTKOWSKI; Vijay RAMASWAMY; Richard J. GILBERTSON; Andrey KORSHUNOV; Michael D. TAYLOR; Peter LICHTER; David MALKIN; Amar GAJJAR; Jan O. KORBEL a Stefan M. PFISTER
Vydání
Lancet Oncology, New York, Elsevier Science INC, 2018, 1470-2045
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30204 Oncology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 35.386
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14110/18:00104147
Organizační jednotka
Lékařská fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Medulloblastoma
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 16. 12. 2019 10:43, Mgr. Tereza Miškechová
Anotace
V originále
Background Medulloblastoma is associated with rare hereditary cancer predisposition syndromes; however, consensus medulloblastoma predisposition genes have not been defined and screening guidelines for genetic counselling and testing for paediatric patients are not available. We aimed to assess and define these genes to provide evidence for future screening guidelines. Methods In this international, multicentre study, we analysed patients with medulloblastoma from retrospective cohorts (International Cancer Genome Consortium [ICGC] PedBrain, Medulloblastoma Advanced Genomics International Consortium [MAGIC], and the CEFALO series) and from prospective cohorts from four clinical studies (SJMB03, SJMB12, SJYC07, and I-HIT-MED). Whole-genome sequences and exome sequences from blood and tumour samples were analysed for rare damaging germline mutations in cancer predisposition genes. DNA methylation profiling was done to determine consensus molecular subgroups: WNT (MBWNT), SHH (MBSHH), group 3 (MBGroup3), and group 4 (MBGroup4). Medulloblastoma predisposition genes were predicted on the basis of rare variant burden tests against controls without a cancer diagnosis from the Exome Aggregation Consortium (ExAC). Previously defined somatic mutational signatures were used to further classify medulloblastoma genomes into two groups, a clock-like group (signatures 1 and 5) and a homologous recombination repair deficiency-like group (signatures 3 and 8), and chromothripsis was investigated using previously established criteria. Progression-free survival and overall survival were modelled for patients with a genetic predisposition to medulloblastoma. Findings We included a total of 1022 patients with medulloblastoma from the retrospective cohorts (n=673) and the four prospective studies (n=349), from whom blood samples (n=1022) and tumour samples (n=800) were analysed for germline mutations in 110 cancer predisposition genes. In our rare variant burden analysis, we compared these against 53 105 sequenced controls from ExAC and identified APC, BRCA2, PALB2, PTCH1, SUFU, and TP53 as consensus medulloblastoma predisposition genes according to our rare variant burden analysis and estimated that germline mutations accounted for 6% of medulloblastoma diagnoses in the retrospective cohort. The prevalence of genetic predispositions differed between molecular subgroups in the retrospective cohort and was highest for patients in the MBSHH subgroup (20% in the retrospective cohort). These estimates were replicated in the prospective clinical cohort (germline mutations accounted for 5% of medulloblastoma diagnoses, with the highest prevalence [14%] in the MBSHH subgroup). Patients with germline APC mutations developed MBWNT and accounted for most (five [71%] of seven) cases of MBWNT that had no somatic CTNNB1 exon 3 mutations. Patients with germline mutations in SUFU and PTCH1 mostly developed infant MBSHH. Germline TP53 mutations presented only in childhood patients in the MBSHH subgroup and explained more than half (eight [57%] of 14) of all chromothripsis events in this subgroup. Germline mutations in PALB2 and BRCA2 were observed across the MBSHH, MBGroup3, and MBGroup4 molecular subgroups and were associated with mutational signatures typical of homologous recombination repair deficiency.
Návaznosti
| ROZV/24/LF/2018, interní kód MU |
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| ROZV/25/LF/2017, interní kód MU |
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