12-52691280-C-A

Variant names:

• chr12-52691280-C-A
• rs763455099
• NM_175078.3:c.1622G>T

Variant summary

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

The NM_175078.3(KRT77):​c.1622G>T​(p.Gly541Val) 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. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: KRT77 NM_175078.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.88

Genes affected

KRT77 (HGNC:20411): (keratin 77) Keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into epithelial keratins and hair keratins. This gene encodes an epithelial keratin that is expressed in the skin and eccrine sweat glands. The type II keratins are clustered in a region of chromosome 12q13.[provided by RefSeq, Jun 2009]

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=0.09292495).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT77	NM_175078.3	c.1622G>T	p.Gly541Val	missense_variant	Exon 9 of 9	ENST00000341809.8	NP_778253.2
KRT77	XM_011538288.3	c.923G>T	p.Gly308Val	missense_variant	Exon 9 of 9		XP_011536590.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT77	ENST00000341809.8	c.1622G>T	p.Gly541Val	missense_variant	Exon 9 of 9	1	NM_175078.3	ENSP00000342710.3
KRT77	ENST00000553168.1	n.*960G>T		non_coding_transcript_exon_variant	Exon 10 of 10	1		ENSP00000448207.1
KRT77	ENST00000553168.1	n.*960G>T		3_prime_UTR_variant	Exon 10 of 10	1		ENSP00000448207.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1448218 Hom.: 0 Cov.: 64 AF XY: 0.00 AC XY: 0 AN XY: 719886

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.058	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	11
DANN	Benign	0.84
DEOGEN2	Benign	0.12	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.069	N
LIST_S2	Benign	0.36	T
M_CAP	Benign	0.036	D
MetaRNN	Benign	0.093	T
MetaSVM	Benign	-0.69	T
MutationAssessor	Uncertain	2.1	M
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.17
Sift	Benign	0.21	T
Sift4G	Uncertain	0.048	D
Polyphen		0.20	B
Vest4		0.24
MutPred		0.37		Gain of sheet (P = 0.0101);
MVP		0.47
MPC		0.24
ClinPred		0.14	T
GERP RS		0.35
Varity_R		0.079
gMVP		0.57

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

LitVar

Other links and lift over

dbSNP: rs763455099; hg19: chr12-53085064;