NM_032740.4:c.308T>C

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_032740.4(SFT2D3):c.308T>C(p.Leu103Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,458,702 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000031 ( 0 hom. )

Consequence

SFT2D3
NM_032740.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.32

Publications

0 publications found

Variant links:

Genes affected

SFT2D3 (HGNC:28767): (SFT2 domain containing 3) Predicted to be involved in protein transport and vesicle-mediated transport. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

SFT2D3 links:

WDR33 (HGNC:25651): (WD repeat domain 33) This gene encodes a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. This gene is highly expressed in testis and the protein is localized to the nucleus. This gene may play important roles in the mechanisms of cytodifferentiation and/or DNA recombination. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

WDR33 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.948

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SFT2D3	NM_032740.4 link	c.308T>C	p.Leu103Pro	missense_variant	Exon 1 of 1	ENST00000310981.6	NP_116129.3	Q587I9
WDR33	NM_018383.5 link	c.*4487A>G		3_prime_UTR_variant	Exon 22 of 22	ENST00000322313.9	NP_060853.3	Q9C0J8-1
WDR33	XM_011511436.2 link	c.*4487A>G		3_prime_UTR_variant	Exon 22 of 22		XP_011509738.1	Q9C0J8-1
WDR33	XM_005263697.4 link	c.*4657A>G		3_prime_UTR_variant	Exon 21 of 21		XP_005263754.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SFT2D3	ENST00000310981.6 link	c.308T>C	p.Leu103Pro	missense_variant	Exon 1 of 1	6	NM_032740.4	ENSP00000310803.3		Q587I9
WDR33	ENST00000322313.9 link	c.*4487A>G		3_prime_UTR_variant	Exon 22 of 22	1	NM_018383.5	ENSP00000325377.3		Q9C0J8-1

Frequencies

GnomAD3 genomes

AF:

0.00000664

AC:

AN:

150502

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000149

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000130

AC:

AN:

76972

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000357

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000306

AC:

AN:

1308200

Hom.:

Cov.:

AF XY:

0.00000310

AC XY:

AN XY:

645614

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

26386

American (AMR)

AF:

0.00

AC:

AN:

25864

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22734

East Asian (EAS)

AF:

0.00

AC:

AN:

27306

South Asian (SAS)

AF:

0.00

AC:

AN:

72880

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4006

European-Non Finnish (NFE)

AF:

0.00000384

AC:

AN:

1042552

Other (OTH)

AF:

0.00

AC:

AN:

53840

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.007931), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000664

AC:

AN:

150502

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73442

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41290

American (AMR)

AF:

0.00

AC:

AN:

15146

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3438

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9976

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000149

AC:

AN:

67330

Other (OTH)

AF:

0.00

AC:

AN:

2072

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 03, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.308T>C (p.L103P) alteration is located in exon 1 (coding exon 1) of the SFT2D3 gene. This alteration results from a T to C substitution at nucleotide position 308, causing the leucine (L) at amino acid position 103 to be replaced by a proline (P). 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

0.23

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

-0.040

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.22

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.70

M_CAP

Pathogenic

0.94

MetaRNN

Pathogenic

0.95

MetaSVM

Benign

-0.30

MutationAssessor

Pathogenic

3.3

PhyloP100

3.3

PrimateAI

Pathogenic

0.95

PROVEAN

Pathogenic

-6.0

REVEL

Uncertain

0.63

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.81

MutPred

0.78

Loss of MoRF binding (P = 0.0739);

MVP

0.56

ClinPred

0.99

GERP RS

3.5

PromoterAI

-0.084

Neutral

(source)

Varity_R

0.94

gMVP

0.76

Mutation Taster

=18/82

disease causing

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

NM_032740.4:c.308T>C

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