12-51888771-G-T

Variant names:

• chr12-51888771-G-T
• ENST00000340970.8:c.-53G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_182608.4(ANKRD33):​c.349G>T​(p.Gly117Cys) 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. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: ANKRD33 NM_182608.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.178
• Publications: 0 publications found

Genes affected

ANKRD33 (HGNC:13788): (ankyrin repeat domain 33) Predicted to be involved in negative regulation of transcription by RNA polymerase II and negative regulation of transcription regulatory region DNA binding activity. Predicted to act upstream of or within skeletal muscle cell differentiation. Predicted to be located in cytosol and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07399258).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANKRD33	NM_182608.4	c.349G>T	p.Gly117Cys	missense_variant	Exon 2 of 5	ENST00000301190.11	NP_872414.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANKRD33	ENST00000301190.11	c.349G>T	p.Gly117Cys	missense_variant	Exon 2 of 5	2	NM_182608.4	ENSP00000301190.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.349G>T (p.G117C) alteration is located in exon 2 (coding exon 2) of the ANKRD33 gene. This alteration results from a G to T substitution at nucleotide position 349, causing the glycine (G) at amino acid position 117 to be replaced by a cysteine (C). 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	0.097
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	15
DANN	Benign	0.97
Eigen	Benign	-0.76
Eigen_PC	Benign	-0.86
FATHMM_MKL	Benign	0.10	N
LIST_S2	Benign	0.31	T
M_CAP	Benign	0.057	D
MetaRNN	Benign	0.074	T
MetaSVM	Benign	-0.96	T
PhyloP100		0.18
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.99	N
REVEL	Benign	0.14
Sift	Benign	0.056	T
Sift4G	Benign	0.061	T
Vest4		0.25
MutPred		0.33		Loss of relative solvent accessibility (P = 0.0186);
MVP		0.18
MPC		0.34
ClinPred		0.55	D
GERP RS		0.22
Varity_R		0.13
gMVP		0.32
Mutation Taster		=95/5	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr12-52282555;