19-44898511-C-CTTTTTTTTT

Variant names:

• chr19-44898511-C-CTTTTTTTTT
• rs34896370
• NM_001128917.2:c.644-2214_644-2206dupTTTTTTTTT

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001128917.2(TOMM40):​c.644-2214_644-2206dupTTTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. There is a variant allele frequency bias in the population database for this variant (GnomAd4), which may indicate mosaicism or somatic mutations in the reference population data. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.00084 (0 hom., cov: 0)
• Consequence: TOMM40 NM_001128917.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.82
• Publications: 1 publications found

Genes affected

TOMM40 (HGNC:18001): (translocase of outer mitochondrial membrane 40) The protein encoded by this gene is localized in the outer membrane of the mitochondria. It is the channel-forming subunit of the translocase of the mitochondrial outer membrane (TOM) complex that is essential for import of protein precursors into mitochondria. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOMM40	NM_001128917.2	c.644-2214_644-2206dupTTTTTTTTT		intron_variant	Intron 5 of 8	ENST00000426677.7	NP_001122389.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOMM40	ENST00000426677.7	c.644-2219_644-2218insTTTTTTTTT		intron_variant	Intron 5 of 8	1	NM_001128917.2	ENSP00000410339.1

Frequencies

GnomAD3 genomes AF: 0.000843 AC: 83 AN: 98506 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.000874

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00140

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000283

Gnomad SAS AF: 0.000352

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000898

Gnomad OTH AF: 0.000749

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.000843 AC: 83 AN: 98492 Hom.: 0 Cov.: 0 AF XY: 0.000821 AC XY: 37 AN XY: 45088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.000874 AC: 21 AN: 24040

American (AMR) AF: 0.00140 AC: 12 AN: 8552

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2794

East Asian (EAS) AF: 0.000284 AC: 1 AN: 3518

South Asian (SAS) AF: 0.000354 AC: 1 AN: 2826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 2216

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 124

European-Non Finnish (NFE) AF: 0.000898 AC: 47 AN: 52340

Other (OTH) AF: 0.000743 AC: 1 AN: 1346

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-1.8

Splicing

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

Other links and lift over

dbSNP: rs34896370; hg19: chr19-45401768;