Genetic Variant NM_006351.4:c.1238C>A (chr19-7927658-G-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_006351.4(TIMM44):c.1238C>A(p.Pro413Gln) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000000685 in 1,460,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P413L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TIMM44
NM_006351.4 missense, splice_region

Scores

Splicing: ADA: 0.3067

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.04

Publications

0 publications found

Variant links:

Genes affected

TIMM44 (HGNC:17316): (translocase of inner mitochondrial membrane 44) This gene encodes a peripheral membrane protein associated with the mitochondrial inner membrane translocase, which functions in the import of proteins across the mitochondrial inner membrane and into the mitochondrial matrix. The encoded protein mediates binding of mitochondrial heat shock protein 70 to the translocase of inner mitochondrial membrane 23 (TIM23) complex. Expression of this gene is upregulated in kidney in a mouse model of diabetes. A mutation in this gene is associated with familial oncocytic thyroid carcinoma. [provided by RefSeq, Jul 2016]

TIMM44 Gene-Disease associations (from GenCC):

thyroid cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

TIMM44 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.77

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006351.4. 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
	TIMM44	NM_006351.4	MANE Select	c.1238C>A	p.Pro413Gln	missense splice_region	Exon 12 of 13	NP_006342.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TIMM44	ENST00000270538.8	TSL:1 MANE Select	c.1238C>A	p.Pro413Gln	missense splice_region	Exon 12 of 13	ENSP00000270538.2	O43615
TIMM44	ENST00000923643.1		c.1226C>A	p.Pro409Gln	missense splice_region	Exon 12 of 13	ENSP00000593702.1
TIMM44	ENST00000870121.1		c.1208C>A	p.Pro403Gln	missense splice_region	Exon 12 of 13	ENSP00000540180.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460836

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726764

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52560

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111840

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.067

BayesDel_noAF

Benign

-0.14

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.11

Eigen

Benign

0.16

Eigen_PC

Benign

0.22

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.058

MetaRNN

Pathogenic

0.77

MetaSVM

Benign

-0.66

MutationAssessor

Benign

1.9

PhyloP100

6.0

PrimateAI

Uncertain

0.61

PROVEAN

Pathogenic

-4.9

REVEL

Uncertain

0.49

Sift

Uncertain

0.024

Sift4G

Benign

0.074

Polyphen

0.83

Vest4

0.57

MutPred

0.60

Loss of ubiquitination at K415 (P = 0.0853)

MVP

0.48

MPC

0.47

ClinPred

0.99

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.48

Mutation Taster

=35/65

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.31

dbscSNV1_RF

Benign

0.34

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over