17-28523977-C-T

Position:

chr17-28523977-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4BS1_Supporting

The NM_001369369.1(FOXN1):c.8C>T(p.Ser3Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000205 in 1,612,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S3S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

FOXN1
NM_001369369.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.41

Variant links:

Genes affected

FOXN1 (HGNC:12765): (forkhead box N1) Mutations in the winged-helix transcription factor gene at the nude locus in mice and rats produce the pleiotropic phenotype of hairlessness and athymia, resulting in a severely compromised immune system. This gene is orthologous to the mouse and rat genes and encodes a similar DNA-binding transcription factor that is thought to regulate keratin gene expression. A mutation in this gene has been correlated with T-cell immunodeficiency, the skin disorder congenital alopecia, and nail dystrophy. Alternative splicing in the 5' UTR of this gene has been observed. [provided by RefSeq, Jul 2008]

FOXN1 links:

RSKR (HGNC:26314): (ribosomal protein S6 kinase related) Predicted to enable protein kinase activity. Predicted to be involved in protein phosphorylation. [provided by Alliance of Genome Resources, Apr 2022]

RSKR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26569209).

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000105 (16/152018) while in subpopulation AMR AF= 0.00105 (16/15270). AF 95% confidence interval is 0.000657. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FOXN1	NM_001369369.1 linkuse as main transcript	c.8C>T	p.Ser3Leu	missense_variant	2/9	ENST00000579795.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FOXN1	ENST00000579795.6 linkuse as main transcript	c.8C>T	p.Ser3Leu	missense_variant	2/9	1	NM_001369369.1	P1
FOXN1	ENST00000226247.2 linkuse as main transcript	c.8C>T	p.Ser3Leu	missense_variant	1/8	1		P1
RSKR	ENST00000481916.6 linkuse as main transcript	c.*1196-67868G>A		intron_variant, NMD_transcript_variant		1			Q96LW2-2
FOXN1	ENST00000577936.2 linkuse as main transcript	c.8C>T	p.Ser3Leu	missense_variant	2/9	4		P1

Frequencies

GnomAD3 genomes

AF:

0.000105

AC:

AN:

152018

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.0000445

AC:

AN:

247156

Hom.:

AF XY:

0.0000520

AC XY:

AN XY:

134620

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000261

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:

0.0000180

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1460536

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726600

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000105

AC:

AN:

152018

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74238

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00105

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

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

T-cell immunodeficiency, congenital alopecia, and nail dystrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 04, 2024

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 3 of the FOXN1 protein (p.Ser3Leu). This variant is present in population databases (rs146091703, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with FOXN1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1016438). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Uncertain

0.029

BayesDel_noAF

Uncertain

0.10

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.28

.;T;T

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.80

T;.;T

M_CAP

Pathogenic

0.37

MetaRNN

Benign

0.27

T;T;T

MetaSVM

Pathogenic

0.88

MutationAssessor

Benign

0.90

.;L;L

MutationTaster

Benign

0.96

D;D

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.95

.;.;N

REVEL

Uncertain

0.45

Sift

Pathogenic

0.0

.;.;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

.;D;D

Vest4

0.80, 0.80

MVP

0.72

MPC

0.60

ClinPred

0.34

GERP RS

4.9

Varity_R

0.62

gMVP

0.42

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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