3-158644624-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_024996.7(GFM1):c.-11C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00293 in 1,564,610 control chromosomes in the GnomAD database, including 115 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.015 (69 hom., cov: 33)
  • Exomes 𝑓: 0.0016 (46 hom.)
• Consequence: GFM1 NM_024996.7 5_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: 0.553

Genes affected

GFM1 (HGNC:13780): (G elongation factor mitochondrial 1) Eukaryotes contain two protein translational systems, one in the cytoplasm and one in the mitochondria. Mitochondrial translation is crucial for maintaining mitochondrial function and mutations in this system lead to a breakdown in the respiratory chain-oxidative phosphorylation system and to impaired maintenance of mitochondrial DNA. This gene encodes one of the mitochondrial translation elongation factors. Its role in the regulation of normal mitochondrial function and in different disease states attributed to mitochondrial dysfunction is not known. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 3-158644624-C-T is Benign according to our data. Variant chr3-158644624-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 137470.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0511 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GFM1	NM_024996.7	c.-11C>T		5_prime_UTR_variant	1/18	ENST00000486715.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GFM1	ENST00000486715.6	c.-11C>T		5_prime_UTR_variant	1/18	1	NM_024996.7	P1
GFM1	ENST00000264263.9	c.-11C>T		5_prime_UTR_variant	1/19	5
GFM1	ENST00000478576.5	c.-11C>T		5_prime_UTR_variant	1/14	2
GFM1	ENST00000478254.5	c.-11C>T		5_prime_UTR_variant, NMD_transcript_variant	1/18	5

Frequencies

GnomAD3 genomes AF: 0.0152 AC: 2321 AN: 152252 Hom.: 69 Cov.: 33

Gnomad AFR AF: 0.0529

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00608

Gnomad ASJ AF: 0.000576

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000147

Gnomad OTH AF: 0.00860

GnomAD3 exomes AF: 0.00336 AC: 572 AN: 170358 Hom.: 14 AF XY: 0.00261 AC XY: 239 AN XY: 91458

Gnomad AFR exome AF: 0.0499

Gnomad AMR exome AF: 0.00281

Gnomad ASJ exome AF: 0.000815

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000503

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000186

Gnomad OTH exome AF: 0.00152

GnomAD4 exome AF: 0.00160 AC: 2264 AN: 1412240 Hom.: 46 Cov.: 30 AF XY: 0.00139 AC XY: 972 AN XY: 697724

Gnomad4 AFR exome AF: 0.0531

Gnomad4 AMR exome AF: 0.00306

Gnomad4 ASJ exome AF: 0.000912

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000362

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000113

Gnomad4 OTH exome AF: 0.00367

GnomAD4 genome AF: 0.0153 AC: 2326 AN: 152370 Hom.: 69 Cov.: 33 AF XY: 0.0151 AC XY: 1125 AN XY: 74508

Gnomad4 AFR AF: 0.0529

Gnomad4 AMR AF: 0.00607

Gnomad4 ASJ AF: 0.000576

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000147

Gnomad4 OTH AF: 0.00851

Alfa AF: 0.00705 Hom.: 5

Bravo AF: 0.0173

Asia WGS AF: 0.00289 AC: 10 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hepatoencephalopathy due to combined oxidative phosphorylation defect type 1 Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 08, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

May 18, 2012

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
Cadd	Benign	9.7
Dann	Benign	0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs112860155; hg19: chr3-158362413;