ENST00000532699.1:n.315-4128G>A

Variant names:

• chr11-112084879-C-A
• ENST00000509359.6:n.*902G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000509359.6(TIMM8B):​n.*902G>T variant causes a non coding transcript exon 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: 30)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TIMM8B ENST00000509359.6 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.336
• 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]

NKAPD1 (HGNC:25569): (NKAP domain containing 1) Enables identical protein binding activity. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.58).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NKAPD1	NM_018195.4	c.*1907C>A		3_prime_UTR_variant	Exon 6 of 6	ENST00000393047.8	NP_060665.3
TIMM8B	NM_012459.4	c.*416G>T		3_prime_UTR_variant	Exon 2 of 2	ENST00000504148.3	NP_036591.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NKAPD1	ENST00000393047.8	c.*1907C>A		3_prime_UTR_variant	Exon 6 of 6	1	NM_018195.4	ENSP00000376767.3
TIMM8B	ENST00000504148.3	c.*416G>T		3_prime_UTR_variant	Exon 2 of 2	1	NM_012459.4	ENSP00000422122.2

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1250 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 672

African (AFR) AF: 0.00 AC: 0 AN: 40

American (AMR) AF: 0.00 AC: 0 AN: 18

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 28

East Asian (EAS) AF: 0.00 AC: 0 AN: 14

South Asian (SAS) AF: 0.00 AC: 0 AN: 10

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 458

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 614

Other (OTH) AF: 0.00 AC: 0 AN: 64

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.58
CADD	Benign	11
DANN	Benign	0.62
PhyloP100		0.34

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr11-111955603;