19-12884948-C-G

Position:

chr19-12884948-C-G

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_006563.5(KLF1):c.1026G>C(p.Gln342His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000465 in 1,613,920 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

KLF1
NM_006563.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.571

Variant links:

Genes affected

KLF1 (HGNC:6345): (KLF transcription factor 1) This gene encodes a hematopoietic-specific transcription factor that induces high-level expression of adult beta-globin and other erythroid genes. The zinc-finger protein binds to the DNA sequence CCACACCCT found in the beta hemoglobin promoter. Heterozygous loss-of-function mutations in this gene result in the dominant In(Lu) blood phenotype. [provided by RefSeq, Oct 2009]

KLF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03255847).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000282 (43/152344) while in subpopulation AFR AF= 0.000962 (40/41586). AF 95% confidence interval is 0.000726. There are 0 homozygotes in gnomad4. There are 21 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 43 AD,BG gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KLF1	NM_006563.5 linkuse as main transcript	c.1026G>C	p.Gln342His	missense_variant	3/3	ENST00000264834.6	NP_006554.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KLF1	ENST00000264834.6 linkuse as main transcript	c.1026G>C	p.Gln342His	missense_variant	3/3	1	NM_006563.5	ENSP00000264834	P1

Frequencies

GnomAD3 genomes

AF:

0.000282

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000877

AC:

AN:

250830

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135716

show subpopulations

Gnomad AFR exome

AF:

0.000864

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461576

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727106

show subpopulations

Gnomad4 AFR exome

AF:

0.000538

Gnomad4 AMR exome

AF:

0.000291

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:

0.0000166

GnomAD4 genome

AF:

0.000282

AC:

AN:

152344

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.000962

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000694

Hom.:

Bravo

AF:

0.000340

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000988

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Jan 24, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 07, 2023	Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt KLF1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. ClinVar contains an entry for this variant (Variation ID: 2182938). This variant has not been reported in the literature in individuals affected with KLF1-related conditions. This variant is present in population databases (rs146658904, gnomAD 0.09%). This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 342 of the KLF1 protein (p.Gln342His). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.63

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.086

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.18

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.84

M_CAP

Benign

0.0044

MetaRNN

Benign

0.033

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.84

MutationTaster

Benign

0.93

PrimateAI

Uncertain

0.58

PROVEAN

Benign

1.6

REVEL

Benign

0.041

Sift

Benign

0.23

Sift4G

Benign

1.0

Polyphen

0.013

Vest4

0.086

MutPred

0.26

Gain of catalytic residue at Q342 (P = 0.0528);

MVP

0.48

MPC

1.7

ClinPred

0.059

GERP RS

3.8

Varity_R

0.099

gMVP

0.72

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over