Sarah Leigh changed review comment from: The new_gene_name tag has been added. The new name for KIAA1109 is BLTP1.; to: Added new-gene-name tag, new approved HGNC gene symbol for KIAA1109 is BLTP1.
Rebecca Foulger changed review comment from: As discussed with members of the GMS Neurology Specialist Test Group on the Webex call Thursday 8th August 2019: Agreed that there is enough evidence to rate this gene Green- although epilepsy may be secondary to the cerebral malformations presentation, include KIAA1109 so that cases recruited through different routes are not missed. Promoted from Amber to Green.; to: As discussed with members of the GMS Neurology Specialist Test Group on the Webex call Thursday 8th August 2019 for Clinical Indication R59 Early onset or syndromic epilepsy: Agreed that there is enough evidence to rate this gene Green- although epilepsy may be secondary to the cerebral malformations presentation, include KIAA1109 so that cases recruited through different routes are not missed. Promoted from Amber to Green.
Rebecca Foulger commented on gene: KIAA1109: As discussed with members of the GMS Neurology Specialist Test Group on the Webex call Thursday 8th August 2019: Agreed that there is enough evidence to rate this gene Green- although epilepsy may be secondary to the cerebral malformations presentation, include KIAA1109 so that cases recruited through different routes are not missed. Promoted from Amber to Green.
Rebecca Foulger edited their review of gene: KIAA1109: Added comment: Review and rating collated by Tracy Lester (Oxford Medical Genetics Laboratories Oxford University Hospitals NHS Foundation Trust, 2019_02_06) on behalf of Wessex and West Midlands GLH for GMS Neurology specialist test group, for Clinical Indication R59 'Early onset or syndromic epilepsy'. Review contributors: Alison Callaway and John Taylor. Suggested gene rating: Green. ; Changed rating: AMBER
Rebecca Foulger changed review comment from: Comment on list classification: Re-assessed gene:disease evidence based on 2019 paper (PMID:30906834). Kept rating as Amber awaiting further information: seizures present in 2 Lithuanian siblings (PMID:29290337) plus two African-American siblings (PMID:30906834). Plus Drosophila model. There is limited patient information because severe LOF alleles are incompatible with life.; to: Comment on list classification: Re-assessed gene:disease evidence based on 2019 paper (PMID:30906834). Kept rating as Amber awaiting further information: seizures present in 2 Lithuanian siblings (PMID:29290337) plus two African-American siblings (PMID:30906834). Plus Drosophila model (PMID:19640479). There is limited patient information because severe LOF alleles are incompatible with life.
Rebecca Foulger Added comment: Comment on list classification: Re-assessed gene:disease evidence based on 2019 paper (PMID:30906834). Kept rating as Amber awaiting further information: seizures present in 2 Lithuanian siblings (PMID:29290337) plus two African-American siblings (PMID:30906834). Plus Drosophila model. There is limited patient information because severe LOF alleles are incompatible with life.
Sarah Leigh Added comment: Comment when marking as ready: Associated with relevant phenotype in OMIM and as probable Gen2Phen gene (although not for seizures in Gen2Phen). At least 2 variants reported in Lithuanian siblings with Alkuraya-Kucinskas syndrome in which seizures were a phenotypic feature (PMID 29290337). Rare drosophila idividuals that are homozygous for a "tweek" variant (ortholog KIAA1109) survive to adulthood and are unable to walk or stand upright for long periods, plus they exhibit seizures, suggestive of severe neurological defects and similar to the reported phenotype of the Lithuanian siblings mentioned (PMID 19640479).