chr17-63601190-A-C

Position:

• chr17-63601190-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_016360.4(TACO1):​c.107A>C​(p.His36Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000142 in 1,405,242 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: TACO1 NM_016360.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.276

Genes affected

TACO1 (HGNC:24316): (translational activator of cytochrome c oxidase I) This gene encodes a mitochondrial protein that function as a translational activator of mitochondrially-encoded cytochrome c oxidase 1. Mutations in this gene are associated with Leigh syndrome.[provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.068840444).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TACO1	NM_016360.4	c.107A>C	p.His36Pro	missense_variant	1/5	ENST00000258975.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TACO1	ENST00000258975.7	c.107A>C	p.His36Pro	missense_variant	1/5	1	NM_016360.4	P3
TACO1	ENST00000684587.1	c.107A>C	p.His36Pro	missense_variant	1/5			A1
TACO1	ENST00000581120.1	n.309A>C		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000142 AC: 2 AN: 1405242 Hom.: 0 Cov.: 31 AF XY: 0.00000144 AC XY: 1 AN XY: 693848

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000185

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 01, 2021

The c.107A>C (p.H36P) alteration is located in exon 1 (coding exon 1) of the TACO1 gene. This alteration results from a A to C substitution at nucleotide position 107, causing the histidine (H) at amino acid position 36 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.043
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	8.7
DANN	Benign	0.36
DEOGEN2	Benign	0.21	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.25	T
M_CAP	Benign	0.0062	T
MetaRNN	Benign	0.069	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-0.12	N
REVEL	Benign	0.051
Sift	Benign	0.20	T
Sift4G	Benign	0.23	T
Polyphen		0.046	B
Vest4		0.16
MutPred		0.18		Gain of glycosylation at H36 (P = 0.0073);
MVP		0.014
MPC		0.64
ClinPred		0.10	T
GERP RS		-2.7
Varity_R		0.12
gMVP		0.20

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-61678549;