dbSNP rs267607202: KLF1:p.Lys288* (chr19-12885368-T-A) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1PM2

The NM_006563.5(KLF1):c.862A>T(p.Lys288*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000138 in 1,452,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Affects (no stars). Synonymous variant affecting the same amino acid position (i.e. K288K) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

KLF1
NM_006563.5 stop_gained

Scores

Clinical Significance

Affects no assertion criteria provided O:1

Conservation

PhyloP100: 4.98

Publications

13 publications found

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 Gene-Disease associations (from GenCC):

congenital dyserythropoietic anemia type 4
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, Orphanet
hereditary persistence of fetal hemoglobin-beta-thalassemia syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary persistence of fetal hemoglobin-sickle cell disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

KLF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLF1	NM_006563.5 link	c.862A>T	p.Lys288*	stop_gained	Exon 2 of 3	ENST00000264834.6	NP_006554.1	Q13351

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLF1	ENST00000264834.6 link	c.862A>T	p.Lys288*	stop_gained	Exon 2 of 3	1	NM_006563.5	ENSP00000264834.3		Q13351

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1452782

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

722068

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33324

American (AMR)

AF:

0.00

AC:

AN:

43708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25890

East Asian (EAS)

AF:

0.00

AC:

AN:

39326

South Asian (SAS)

AF:

0.00

AC:

AN:

84914

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51506

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1108326

Other (OTH)

AF:

0.00

AC:

AN:

60030

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Affects

Submissions summary: Other:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

FETAL HEMOGLOBIN QUANTITATIVE TRAIT LOCUS 6

Other:1

Sep 01, 2010

OMIM

Significance:Affects

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.60

BayesDel_noAF

Pathogenic

0.50

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.97

PhyloP100

5.0

Vest4

0.76

GERP RS

3.0

Mutation Taster

=16/184

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over