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GeneBe

12-52428310-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_004693.3(KRT75):c.1328C>T(p.Ala443Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000291 in 1,614,042 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

KRT75
NM_004693.3 missense

Scores

10
7
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.79
Variant links:
Genes affected
KRT75 (HGNC:24431): (keratin 75) This gene is a member of the type II keratin family clustered on the long arm of chromosome 12. Type I and type II keratins heteropolymerize to form intermediate-sized filaments in the cytoplasm of epithelial cells. This gene is expressed in the companion layer, upper germinative matrix region of the hair follicle, and medulla of the hair shaft. The encoded protein plays an essential role in hair and nail formation. Variations in this gene have been associated with the hair disorders pseudofolliculitis barbae (PFB) and loose anagen hair syndrome (LAHS). [provided by RefSeq, Oct 2008]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2
High AC in GnomAdExome at 20 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
KRT75NM_004693.3 linkuse as main transcriptc.1328C>T p.Ala443Val missense_variant 7/9 ENST00000252245.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
KRT75ENST00000252245.6 linkuse as main transcriptc.1328C>T p.Ala443Val missense_variant 7/91 NM_004693.3 P1
ENST00000548135.1 linkuse as main transcriptn.445G>A non_coding_transcript_exon_variant 3/33

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
152072
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000415
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000796
AC:
20
AN:
251282
Hom.:
0
AF XY:
0.0000663
AC XY:
9
AN XY:
135826
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000621
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.0000308
AC:
45
AN:
1461850
Hom.:
0
Cov.:
58
AF XY:
0.0000275
AC XY:
20
AN XY:
727222
show subpopulations
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:
0.000417
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.0000994
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152192
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74420
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000415
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
ExAC
AF:
0.000115
AC:
14
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJun 24, 2022The c.1328C>T (p.A443V) alteration is located in exon 7 (coding exon 7) of the KRT75 gene. This alteration results from a C to T substitution at nucleotide position 1328, causing the alanine (A) at amino acid position 443 to be replaced by a valine (V). 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
Pathogenic
0.61
BayesDel_addAF
Pathogenic
0.17
D
BayesDel_noAF
Pathogenic
0.37
Cadd
Pathogenic
29
Dann
Pathogenic
1.0
DEOGEN2
Uncertain
0.70
D
Eigen
Pathogenic
0.98
Eigen_PC
Pathogenic
0.90
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Benign
0.66
T
M_CAP
Uncertain
0.17
D
MetaRNN
Uncertain
0.71
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.9
H
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.64
T
PROVEAN
Uncertain
-3.6
D
REVEL
Pathogenic
0.85
Sift
Pathogenic
0.0
D
Sift4G
Uncertain
0.011
D
Polyphen
1.0
D
Vest4
0.71
MutPred
0.72
Gain of ubiquitination at K441 (P = 0.123);
MVP
0.77
MPC
0.44
ClinPred
0.98
D
GERP RS
5.6
Varity_R
0.87
gMVP
0.80

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs561866777; hg19: chr12-52822094; API