rs2014886

Variant names:

• chr12-57783654-C-G
• rs2014886
• NM_005726.6:c.231+371C>G

Your query was ambiguous. Multiple possible variants found:

• chr12-57783654-C-G
• chr12-57783654-C-T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The ENST00000546504.1(ENSG00000257921):​c.288+2C>G variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ENSG00000257921 ENST00000546504.1 splice_donor, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.210
• Publications: 19 publications found

Genes affected

TSFM (HGNC:12367): (Ts translation elongation factor, mitochondrial) This gene encodes a mitochondrial translation elongation factor. The encoded protein is an enzyme that catalyzes the exchange of guanine nucleotides on the translation elongation factor Tu during the elongation step of mitchondrial protein translation. Mutations in this gene are associated with combined oxidative phosphorylation deficiency-3 syndrome. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Mar 2010]

TSFM Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• fatal mitochondrial disease due to combined oxidative phosphorylation defect type 3

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen

ENSG00000257921 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000546504.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSFM	NM_005726.6	MANE Select	c.231+371C>G		intron	N/A	NP_005717.3
	TSFM	NM_001172696.2		c.231+371C>G		intron	N/A	NP_001166167.1	P43897-2
	TSFM	NM_001172697.2		c.231+371C>G		intron	N/A	NP_001166168.1	P43897-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSFM	ENST00000652027.2	MANE Select	c.231+371C>G		intron	N/A	ENSP00000499171.2	P43897-1
	TSFM	ENST00000323833.12	TSL:1	c.231+371C>G		intron	N/A	ENSP00000313877.8	P43897-2
	TSFM	ENST00000543727.5	TSL:1	c.231+371C>G		intron	N/A	ENSP00000439342.1	P43897-4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.48	T
BayesDel_noAF	Benign	-0.92
CADD	Benign	1.8
DANN	Benign	0.21
Eigen	Benign	-0.062
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.014	N
PhyloP100		0.21
GERP RS		0.12
Mutation Taster		=98/2	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs2014886; hg19: chr12-58177437;