Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_018224.4(COA1):c.202C>T(p.Leu68Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000396 in 1,614,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
COA1 (HGNC:21868): (cytochrome c oxidase assembly factor 1) Involved in mitochondrial cytochrome c oxidase assembly and mitochondrial respiratory chain complex I assembly. Located in cytosol and mitochondrion. Is integral component of mitochondrial inner membrane. [provided by Alliance of Genome Resources, Apr 2022]
STK17A (HGNC:11395): (serine/threonine kinase 17a) This gene is a member of the DAP kinase-related apoptosis-inducing protein kinase family and encodes an autophosphorylated nuclear protein with a protein kinase domain. The protein has apoptosis-inducing activity. [provided by RefSeq, Jul 2008]
Uncertain significance, criteria provided, single submitter
clinical testing
Ambry Genetics
Oct 29, 2021
The c.202C>T (p.L68F) alteration is located in exon 4 (coding exon 3) of the COA1 gene. This alteration results from a C to T substitution at nucleotide position 202, causing the leucine (L) at amino acid position 68 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -