NM_207377.3:c.451C>T

Variant names:

• chr14-58408574-C-T
• rs767446077
• NM_207377.3:c.451C>T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_207377.3(TOMM20L):​c.451C>T​(p.Pro151Ser) variant causes a missense 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. 14/23 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TOMM20L NM_207377.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.315

Genes affected

TOMM20L (HGNC:33752): (translocase of outer mitochondrial membrane 20 like) Predicted to enable mitochondrion targeting sequence binding activity. Predicted to contribute to protein transmembrane transporter activity. Predicted to be involved in protein import into mitochondrial matrix and tRNA import into mitochondrion. Predicted to be integral component of membrane. Predicted to be part of mitochondrial outer membrane translocase complex. Predicted to be integral component of mitochondrial outer membrane. [provided by Alliance of Genome Resources, Apr 2022]

TIMM9 (HGNC:11819): (translocase of inner mitochondrial membrane 9) TIMM9 belongs to a family of evolutionarily conserved proteins that are organized in heterooligomeric complexes in the mitochondrial intermembrane space. These proteins mediate the import and insertion of hydrophobic membrane proteins into the mitochondrial inner membrane.[supplied by OMIM, Apr 2004]

ENSG00000258378 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.049393445).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOMM20L	NM_207377.3	c.451C>T	p.Pro151Ser	missense_variant	Exon 5 of 5	ENST00000360945.7	NP_997260.1
TIMM9	NM_012460.4	c.*460G>A		3_prime_UTR_variant	Exon 6 of 6	ENST00000395159.7	NP_036592.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOMM20L	ENST00000360945.7	c.451C>T	p.Pro151Ser	missense_variant	Exon 5 of 5	1	NM_207377.3	ENSP00000354204.2
TIMM9	ENST00000395159.7	c.*460G>A		3_prime_UTR_variant	Exon 6 of 6	1	NM_012460.4	ENSP00000378588.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	9.3
DANN	Uncertain	0.98
DEOGEN2	Benign	0.014	T
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.50
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.48	T
M_CAP	Benign	0.0059	T
MetaRNN	Benign	0.049	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.6	L
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.086
Sift	Benign	0.18	T
Sift4G	Benign	0.098	T
Polyphen		0.015	B
Vest4		0.12
MutPred		0.20		Gain of phosphorylation at P151 (P = 0.0127);
MVP		0.061
MPC		0.63
ClinPred		0.10	T
GERP RS		1.1
Varity_R		0.039
gMVP		0.094

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.20		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.20		Position offset: -45

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

Publications

LitVar

Other links and lift over

dbSNP: rs767446077; hg19: chr14-58875292;