1-44129644-A-G

Position:

• chr1-44129644-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_173484.4(KLF17):​c.373A>G​(p.Thr125Ala) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KLF17 NM_173484.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0320

Genes affected

KLF17 (HGNC:18830): (KLF transcription factor 17) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in negative regulation of transcription by RNA polymerase II. Predicted to act upstream of or within gamete generation. Predicted to be located in nucleus. Predicted to be part of chromatin. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.046545893).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KLF17	NM_173484.4	c.373A>G	p.Thr125Ala	missense_variant	2/4	ENST00000372299.4	NP_775755.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KLF17	ENST00000372299.4	c.373A>G	p.Thr125Ala	missense_variant	2/4	1	NM_173484.4	ENSP00000361373	P1
KLF17	ENST00000476802.1	c.289+84A>G		intron_variant, NMD_transcript_variant		3		ENSP00000489364

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251464 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135912

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

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 Cov.: 52

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 17, 2023

The c.373A>G (p.T125A) alteration is located in exon 2 (coding exon 2) of the KLF17 gene. This alteration results from a A to G substitution at nucleotide position 373, causing the threonine (T) at amino acid position 125 to be replaced by an alanine (A). 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	Benign	0.21
BayesDel_addAF	Benign	-0.47	T
BayesDel_noAF	Benign	-0.74
CADD	Benign	2.0
DANN	Benign	0.65
DEOGEN2	Benign	0.0039	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.0012	T
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.63	N
REVEL	Benign	0.0040
Sift	Benign	0.48	T
Sift4G	Benign	0.91	T
Polyphen		0.0010	B
Vest4		0.14
MutPred		0.28		Loss of phosphorylation at T125 (P = 0.0453);
MVP		0.17
MPC		0.079
ClinPred		0.020	T
GERP RS		1.7
Varity_R		0.029
gMVP		0.24

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: rs758461714; hg19: chr1-44595316;