Oncogenic effects of germline variants in lysosomal storage disease genes.
PURPOSE
Clinical and experimental evidence has suggested pathobiological crosstalk between lysosomal storage diseases (LSDs) and cancer. We aimed to elucidate the association between germline variants in LSD genes and cancer.


METHODS
We performed aggregate rare variant association analysis of potentially pathogenic variants (PPVs) in 42 LSD genes and >30 histological types of cancer using genome sequencing data from 2567 cancer patients (Pan-Cancer cohort) and 2504 healthy individuals (1000 Genomes cohort) and exome sequencing data from 53,105 individuals without cancer (ExAC cohort).


RESULTS
PPVs were significantly enriched in the Pan-Cancer cohort compared with the 1000 Genomes cohort (PPV prevalence, 20.7% vs. 13.5%; P = 8.7 × 10-12). Cancer risk was higher in individuals with a greater number of PPVs (P = 7.3 × 10-12). Population structure-adjusted optimal sequence kernel association test (SKAT-O) revealed 37 significantly associated cancer type-LSD gene pairs. These results were supported by the consistent tendency toward enrichment of PPVs in cancer patients compared with the ExAC cohort. Cancer developed earlier in PPV carriers than in wild-type patients. Analysis of tumor transcriptomic data from the pancreatic adenocarcinoma cohort revealed 508 genes differentially expressed according to PPV carrier status, which were highly enriched in the core signaling pathways of pancreatic cancer.


CONCLUSION
Carriers of PPVs in LSD genes are at increased risk of cancer.
['Shin|Junghoon|J|http://orcid.org/0000-0002-6834-7217', 'Kim|Daeyoon|D|', 'Kim|Hyung-Lae|HL|', 'Choi|Murim|M|', 'Koh|Youngil|Y|http://orcid.org/0000-0002-4750-931X', 'Yoon|Sung-Soo|SS|http://orcid.org/0000-0003-2591-7459']
D016022:Case-Control Studies D002874:Chromosome Mapping D015331:Cohort Studies D030541:Databases, Genetic D059472:Exome D005260:Female D020022:Genetic Predisposition to Disease D005854:Germ Cells D018095:Germ-Line Mutation D006801:Humans D016464:Lysosomal Storage Diseases D008297:Male D009369:Neoplasms D012307:Risk Factors D000073359:Whole Exome Sequencing
germline variant lysosomal storage disease cancer rare variant association study