chr11-112085419-T-A

Variant names:

• chr11-112085419-T-A
• NM_012459.4:c.128A>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_012459.4(TIMM8B):​c.128A>T​(p.Lys43Met) 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TIMM8B NM_012459.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.97
• Publications: 0 publications found

Genes affected

TIMM8B (HGNC:11818): (translocase of inner mitochondrial membrane 8 homolog B) This gene encodes a member of a well-conserved family of proteins with similarity to yeast Tim mitochondrial import proteins. This gene is encoded by a nuclear gene and is transported into the intermembrane space of the mitochondrion. When formed into complexes, these proteins guide membrane-spanning proteins across the mitochondrial intermembrane space before they are added into the mitochondrial inner membrane. This gene is adjacent to succinate dehydrogenase, subunit D (SDHD), in which mutations have been found in affected members of families with hereditary paraganglioma.[provided by RefSeq, Aug 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3791362).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012459.4. 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
	TIMM8B	NM_012459.4	MANE Select	c.128A>T	p.Lys43Met	missense	Exon 2 of 2	NP_036591.3	Q9Y5J9
	TIMM8B	NR_028383.2		n.494A>T		non_coding_transcript_exon	Exon 3 of 3
	TIMM8B	NR_160400.1		n.505A>T		non_coding_transcript_exon	Exon 3 of 3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TIMM8B	ENST00000504148.3	TSL:1 MANE Select	c.128A>T	p.Lys43Met	missense	Exon 2 of 2	ENSP00000422122.2	Q9Y5J9
	TIMM8B	ENST00000541231.1	TSL:1	c.173A>T	p.Lys58Met	missense	Exon 2 of 2	ENSP00000438455.1	G3XAN8
	TIMM8B	ENST00000509359.6	TSL:1	n.*362A>T		non_coding_transcript_exon	Exon 3 of 3	ENSP00000421964.2	E9PIR3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.82
BayesDel_addAF	Uncertain	0.020	T
BayesDel_noAF	Benign	-0.21
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.93	D
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.38	T
MetaSVM	Uncertain	-0.20	T
PhyloP100		2.0
PrimateAI	Uncertain	0.56	T
PROVEAN	Pathogenic	-5.7	D
REVEL	Uncertain	0.45
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0070	D
Polyphen		1.0	D
Vest4		0.39
MutPred		0.56		Loss of methylation at K43 (P = 0.0111)
MVP		0.80
MPC		0.20
ClinPred		1.0	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.54
gMVP		0.57
Mutation Taster		=67/33	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
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

Other links and lift over

hg19: chr11-111956143;