Genetic Variant NHS:p.Pro40Pro (chrX-17375877-G-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_001291867.2(NHS):c.120G>T(p.Pro40Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000001 in 995,842 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0000010 ( 0 hom. 0 hem. )

Consequence

NHS
NM_001291867.2 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.928

Publications

0 publications found

Variant links:

Genes affected

NHS (HGNC:7820): (NHS actin remodeling regulator) This gene encodes a protein containing four conserved nuclear localization signals. The encoded protein functions in eye, tooth, craniofacial and brain development, and it can regulate actin remodeling and cell morphology. Mutations in this gene have been shown to cause Nance-Horan syndrome, and also X-linked cataract-40. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, May 2014]

NHS Gene-Disease associations (from GenCC):

Nance-Horan syndrome
Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Orphanet, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
early-onset nuclear cataract
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

NHS links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.66).

BP6

Variant X-17375877-G-T is Benign according to our data. Variant chrX-17375877-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 1995455.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.928 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NHS	NM_001291867.2 link	c.120G>T	p.Pro40Pro	synonymous_variant	Exon 1 of 9	ENST00000676302.1	NP_001278796.1	Q6T4R5-1
NHS	NM_198270.4 link	c.120G>T	p.Pro40Pro	synonymous_variant	Exon 1 of 8		NP_938011.1	Q6T4R5-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NHS	ENST00000676302.1 link	c.120G>T	p.Pro40Pro	synonymous_variant	Exon 1 of 9		NM_001291867.2	ENSP00000502262.1		Q6T4R5-1
NHS	ENST00000380060.7 link	c.120G>T	p.Pro40Pro	synonymous_variant	Exon 1 of 8	1		ENSP00000369400.3		Q6T4R5-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000100

AC:

AN:

995842

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

320532

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

20961

American (AMR)

AF:

0.00

AC:

AN:

21219

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

15989

East Asian (EAS)

AF:

0.00

AC:

AN:

23937

South Asian (SAS)

AF:

0.00

AC:

AN:

43654

European-Finnish (FIN)

AF:

0.00

AC:

AN:

24929

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2680

European-Non Finnish (NFE)

AF:

0.00000125

AC:

AN:

800506

Other (OTH)

AF:

0.00

AC:

AN:

41967

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Nance-Horan syndrome

Benign:1

May 20, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.66

CADD

Benign

6.9

(source)

DANN

Benign

0.78

PhyloP100

0.93

PromoterAI

-0.011

Neutral

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over