rs1209423257
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP5_Moderate
The NM_017446.4(MRPL39):c.589-924G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000528 in 151,500 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Consequence
NM_017446.4 intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
MRPL39 | NM_017446.4 | c.589-924G>A | intron_variant | Intron 5 of 9 | ENST00000352957.9 | NP_059142.3 | ||
MRPL39 | NM_080794.4 | c.589-924G>A | intron_variant | Intron 5 of 10 | NP_542984.3 | |||
MRPL39 | XM_006724026.5 | c.589-924G>A | intron_variant | Intron 5 of 9 | XP_006724089.1 | |||
MRPL39 | XM_011529651.3 | c.463-924G>A | intron_variant | Intron 5 of 9 | XP_011527953.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
MRPL39 | ENST00000352957.9 | c.589-924G>A | intron_variant | Intron 5 of 9 | 1 | NM_017446.4 | ENSP00000284967.7 | |||
MRPL39 | ENST00000307301.11 | c.589-924G>A | intron_variant | Intron 5 of 10 | 5 | ENSP00000305682.7 | ||||
MRPL39 | ENST00000419219.1 | c.559-924G>A | intron_variant | Intron 5 of 7 | 5 | ENSP00000404426.1 |
Frequencies
GnomAD3 genomes AF: 0.0000528 AC: 8AN: 151500Hom.: 0 Cov.: 31
GnomAD4 genome AF: 0.0000528 AC: 8AN: 151500Hom.: 0 Cov.: 31 AF XY: 0.0000406 AC XY: 3AN XY: 73922
ClinVar
Submissions by phenotype
Leigh syndrome Pathogenic:1
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Mitochondrial disease Pathogenic:1
Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with lethal infantile mitochondrial disease. (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0217 - Non-coding variant with predicted effect. RNASeq on patient fibroblasts showed this variant causes mis-splicing resulting a premature termination codon p.(Gln197Argfs*9), which is predicted to lead to nonsense-mediated decay (NMD). RNASeq and immunoblotting showed markedly reduced MRPL39 expression consistent with NMD (PMID: 37133451). (SP) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD <0.01 for a recessive condition (v3: 8 heterozygotes, 0 homozygotes). (SP) 0402 - Variant is located in a gene associated with a severe early-onset recessive condition that is intolerant to bi-allelic loss of function variants (gnomAD). (SP) 0704 - Other NMD-predicted variants comparable to the one identified in this case have limited previous evidence for pathogenicity. Another NMD-predicted variant, p.(Ser176Leufs*8), was reported in a patient with mitochondrial disease in trans with this variant (c.589-924G>A; PMID: 37133451). (SP) 0803 - This variant has limited previous evidence of pathogenicity in unrelated individuals. Two patients with lethal infantile mitochondrial disease were found to harbour this variant (PMID: 37133451). (SP) 0905 - No published segregation evidence has been identified for this variant. (I) 1001 - This variant has strong functional evidence supporting abnormal protein function. Western blots on patient fibroblasts showed destabilisation of mitoribosome and defective translation of the OXPHOS complexes (PMID: 37133451). (SP) 1205 - This variant has been shown to be maternally inherited. Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
Combined oxidative phosphorylation deficiency 59 Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at