chr1-26951461-C-G

Variant names:

• chr1-26951461-C-G
• rs1306524391
• NM_152365.3:c.920G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_152365.3(KDF1):​c.920G>C​(p.Arg307Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KDF1 NM_152365.3 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 5.79
• Publications: 3 publications found

Genes affected

KDF1 (HGNC:26624): (keratinocyte differentiation factor 1) Predicted to be involved in several processes, including positive regulation of epidermal cell differentiation; regulation of epidermal cell division; and skin development. Predicted to act upstream of or within keratinocyte development and negative regulation of keratinocyte proliferation. Located in cell junction; mitotic spindle; and nucleoplasm. Implicated in ectodermal dysplasia 12. [provided by Alliance of Genome Resources, Apr 2022]

KDF1 Gene-Disease associations (from GenCC):

• ectodermal dysplasia 12, hypohidrotic/hair/tooth/nail type

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
• autosomal dominant hypohidrotic ectodermal dysplasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152365.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KDF1	NM_152365.3	MANE Select	c.920G>C	p.Arg307Pro	missense	Exon 2 of 4	NP_689578.2	Q8NAX2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KDF1	ENST00000320567.6	TSL:2 MANE Select	c.920G>C	p.Arg307Pro	missense	Exon 2 of 4	ENSP00000319179.5	Q8NAX2
	KDF1	ENST00000866899.1		c.920G>C	p.Arg307Pro	missense	Exon 2 of 4	ENSP00000536958.1
	KDF1	ENST00000866900.1		c.920G>C	p.Arg307Pro	missense	Exon 3 of 5	ENSP00000536959.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Hypodontia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Uncertain	0.084	D
BayesDel_noAF	Benign	-0.12
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.069
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.044	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M
PhyloP100		5.8
PROVEAN	Pathogenic	-6.4	D
REVEL	Benign	0.28
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.34	B
Vest4		0.85
MutPred		0.26		Gain of glycosylation at R307 (P = 0.0107)
MVP		0.28
MPC		1.2
ClinPred		0.99	D
GERP RS		3.6
Varity_R		0.92
gMVP		0.86
Mutation Taster		=33/67	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.16		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1306524391; hg19: chr1-27277952;