19-44899791-CTTTTTTTTTTTTTTTTTTTTTTT-CTTTTTTTTTT

Variant names:

• chr19-44899791-CTTTTTTTTTTTTT-C
• rs10524523
• NM_001128917.2:c.644-916_644-904delTTTTTTTTTTTTT

Variant summary

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

The NM_001128917.2(TOMM40):​c.644-916_644-904delTTTTTTTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. 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 0.020 (6 hom., cov: 0)
• Consequence: TOMM40 NM_001128917.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.499
• Publications: 124 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.644-916_644-904delTTTTTTTTTTTTT		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.644-938_644-926delTTTTTTTTTTTTT		intron_variant	Intron 5 of 8	1	NM_001128917.2	ENSP00000410339.1

Frequencies

GnomAD3 genomes AF: 0.0202 AC: 1834 AN: 90578 Hom.: 3 Cov.: 0

Gnomad AFR AF: 0.0281

Gnomad AMI AF: 0.00154

Gnomad AMR AF: 0.00945

Gnomad ASJ AF: 0.0280

Gnomad EAS AF: 0.00209

Gnomad SAS AF: 0.0157

Gnomad FIN AF: 0.0121

Gnomad MID AF: 0.00725

Gnomad NFE AF: 0.0190

Gnomad OTH AF: 0.0163

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

GnomAD4 genome AF: 0.0203 AC: 1835 AN: 90588 Hom.: 6 Cov.: 0 AF XY: 0.0199 AC XY: 827 AN XY: 41572

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

African (AFR) AF: 0.0283 AC: 758 AN: 26788

American (AMR) AF: 0.00929 AC: 63 AN: 6780

Ashkenazi Jewish (ASJ) AF: 0.0280 AC: 67 AN: 2390

East Asian (EAS) AF: 0.00209 AC: 5 AN: 2392

South Asian (SAS) AF: 0.0143 AC: 31 AN: 2164

European-Finnish (FIN) AF: 0.0121 AC: 40 AN: 3300

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 128

European-Non Finnish (NFE) AF: 0.0190 AC: 850 AN: 44762

Other (OTH) AF: 0.0162 AC: 20 AN: 1234

⚠️ 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.

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.50

Splicing

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

Other links and lift over

dbSNP: rs10524523; hg19: chr19-45403048;