12-51888263-T-C

Variant names:

• chr12-51888263-T-C
• rs140489571
• NM_182608.4:c.77T>C

Variant summary

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

The NM_182608.4(ANKRD33):​c.77T>C​(p.Val26Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. 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. V26G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ANKRD33 NM_182608.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.01
• 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: 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 (MetaRNN=0.06078604).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANKRD33	NM_182608.4	c.77T>C	p.Val26Ala	missense_variant	Exon 1 of 5	ENST00000301190.11	NP_872414.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANKRD33	ENST00000301190.11	c.77T>C	p.Val26Ala	missense_variant	Exon 1 of 5	2	NM_182608.4	ENSP00000301190.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461866 Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1 AN XY: 727236

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111998

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.81
CADD	Benign	7.3
DANN	Benign	0.70
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.8
FATHMM_MKL	Benign	0.019	N
LIST_S2	Benign	0.28	T
M_CAP	Benign	0.0019	T
MetaRNN	Benign	0.061	T
MetaSVM	Benign	-1.0	T
PhyloP100		-1.0
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.020	N
REVEL	Benign	0.020
Sift	Benign	0.12	T
Sift4G	Pathogenic	0.0	D
Vest4		0.065
MutPred		0.23		Loss of sheet (P = 0.0104);
MVP		0.030
MPC		0.26
ClinPred		0.44	T
GERP RS		-6.3
PromoterAI		0.033	Neutral
Varity_R		0.036
gMVP		0.39
Mutation Taster		=99/1	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

dbSNP: rs140489571; hg19: chr12-52282047;