PMID- 30911571 OWN - NLM STAT- MEDLINE DCOM- 20200320 LR - 20221207 IS - 2328-9503 (Print) IS - 2328-9503 (Electronic) IS - 2328-9503 (Linking) VI - 6 IP - 3 DP - 2019 Mar TI - Contribution of ultrarare variants in mTOR pathway genes to sporadic focal epilepsies. PG - 475-485 LID - 10.1002/acn3.722 [doi] AB - OBJECTIVE: We investigated the contribution to sporadic focal epilepsies (FE) of ultrarare variants in genes coding for the components of complexes regulating mechanistic Target Of Rapamycin (mTOR)complex 1 (mTORC1). METHODS: We collected genetic data of 121 Italian isolated FE cases and 512 controls by Whole Exome Sequencing (WES) and single-molecule Molecular Inversion Probes (smMIPs) targeting 10 genes of the GATOR1, GATOR2, and TSC complexes. We collapsed "qualifying" variants (ultrarare and predicted to be deleterious or loss of function) across the examined genes and sought to identify their enrichment in cases compared to controls. RESULTS: We found eight qualifying variants in cases and nine in controls, demonstrating enrichment in FE patients (P = 0.006; exact unconditional test, one-tailed). Pathogenic variants were identified in DEPDC5 and TSC2, both major genes for Mendelian FE syndromes. INTERPRETATION: Our findings support the contribution of ultrarare variants in genes in the mTOR pathway complexes GATOR and TSC to the risk of sporadic FE and a shared genetic basis between rare and common epilepsies. The identification of a monogenic etiology in isolated cases, most typically encountered in clinical practice, may offer to a broader community of patients the perspective of precision therapies directed by the underlying genetic cause. FAU - Pippucci, Tommaso AU - Pippucci T AD - Medical Genetics Unit Polyclinic Sant'Orsola-Malpighi University Hospital Bologna Italy. FAU - Licchetta, Laura AU - Licchetta L AD - IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy. AD - Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy. FAU - Baldassari, Sara AU - Baldassari S AD - Department of Biomedical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy. FAU - Marconi, Caterina AU - Marconi C AD - Department of Biomedical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy. FAU - De Luise, Monica AU - De Luise M AD - Department of Biomedical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy. FAU - Myers, Candace AU - Myers C AD - Division of Genetic Medicine Department of Pediatrics University of Washington Seattle Washington. FAU - Nardi, Elena AU - Nardi E AD - Department of Statistical Sciences "Paolo Fortunati" University of Bologna Bologna Italy. FAU - Provini, Federica AU - Provini F AD - IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy. AD - Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy. FAU - Cameli, Cinzia AU - Cameli C AD - Department of Pharmacy and Biotechnology University of Bologna Bologna Italy. FAU - Minardi, Raffaella AU - Minardi R AD - IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy. AD - Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy. FAU - Bacchelli, Elena AU - Bacchelli E AD - Department of Pharmacy and Biotechnology University of Bologna Bologna Italy. FAU - Giordano, Lucio AU - Giordano L AD - Neuropsychiatric Department Spedali Civili Brescia Italy. FAU - Crichiutti, Giovanni AU - Crichiutti G AD - Division of Pediatrics Department of Medicine University of Udine Udine Italy. FAU - d'Orsi, Giuseppe AU - d'Orsi G AD - Epilepsy Center Clinic of Nervous System Diseases University of Foggia Riuniti Hospital Foggia Italy. FAU - Seri, Marco AU - Seri M AD - Medical Genetics Unit Polyclinic Sant'Orsola-Malpighi University Hospital Bologna Italy. AD - Department of Biomedical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy. FAU - Gasparre, Giuseppe AU - Gasparre G AD - Department of Biomedical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy. FAU - Mefford, Heather C AU - Mefford HC AD - Division of Genetic Medicine Department of Pediatrics University of Washington Seattle Washington. FAU - Tinuper, Paolo AU - Tinuper P AD - IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy. AD - Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy. FAU - Bisulli, Francesca AU - Bisulli F AD - IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy. AD - Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy. CN - Collaborative Group of Italian League Against Epilepsy (LICE) Genetic Commission LA - eng GR - R01 NS069605/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190225 PL - United States TA - Ann Clin Transl Neurol JT - Annals of clinical and translational neurology JID - 101623278 RN - 0 (DEPDC5 protein, human) RN - 0 (GTPase-Activating Proteins) RN - 0 (Multiprotein Complexes) RN - 0 (TSC1 protein, human) RN - 0 (TSC2 protein, human) RN - 0 (Tuberous Sclerosis Complex 1 Protein) RN - 0 (Tuberous Sclerosis Complex 2 Protein) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Epilepsies, Partial/*genetics MH - Female MH - GTPase-Activating Proteins/genetics MH - Genetic Predisposition to Disease MH - Genomic Structural Variation/*genetics MH - Humans MH - Infant MH - Male MH - Mechanistic Target of Rapamycin Complex 1/*genetics MH - Middle Aged MH - Multiprotein Complexes/genetics MH - Signal Transduction MH - Tuberous Sclerosis Complex 1 Protein/genetics MH - Tuberous Sclerosis Complex 2 Protein/genetics MH - Exome Sequencing PMC - PMC6414475 COIS- The authors report no disclosures. FIR - Bianchi, Amedeo IR - Bianchi A FIR - Striano, Pasquale IR - Striano P FIR - Gambardella, Antonio IR - Gambardella A FIR - Meletti, Stefano IR - Meletti S FIR - Dilena, Roberto IR - Dilena R FIR - Santucci, Margherita IR - Santucci M FIR - Marini, Carla IR - Marini C FIR - Vignoli, Aglaia IR - Vignoli A FIR - Gobbi, Giuseppe IR - Gobbi G FIR - Briatore, Eleonora IR - Briatore E FIR - Mastrangelo, Massimo IR - Mastrangelo M EDAT- 2019/03/27 06:00 MHDA- 2019/03/27 06:01 PMCR- 2019/02/25 CRDT- 2019/03/27 06:00 PHST- 2018/09/17 00:00 [received] PHST- 2018/12/07 00:00 [revised] PHST- 2018/12/08 00:00 [accepted] PHST- 2019/03/27 06:00 [entrez] PHST- 2019/03/27 06:00 [pubmed] PHST- 2019/03/27 06:01 [medline] PHST- 2019/02/25 00:00 [pmc-release] AID - ACN3722 [pii] AID - 10.1002/acn3.722 [doi] PST - epublish SO - Ann Clin Transl Neurol. 2019 Feb 25;6(3):475-485. doi: 10.1002/acn3.722. eCollection 2019 Mar.