20-32987751-G-C

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1PM2PP2PP3_Moderate

The NM_080675.4(SUN5):c.638C>G(p.Thr213Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,020 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T213M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SUN5
NM_080675.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.97

Publications

0 publications found

Variant links:

Genes affected

SUN5 (HGNC:16252): (Sad1 and UNC84 domain containing 5) The protein encoded by this gene appears to play a role in the meiotic stage of spermatogenesis. The encoded protein localizes to the junction between the sperm head and body and may be involved in nuclear envelope reconstitution and nuclear migration. Mutations in this gene have been implicated in acephalic spermatozoa syndrome. [provided by RefSeq, May 2017]

SUN5 Gene-Disease associations (from GenCC):

spermatogenic failure 16
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

SUN5 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM1

In a topological_domain Perinuclear space (size 256) in uniprot entity SUN5_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_080675.4

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 4 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 0.68847 (below the threshold of 3.09). Trascript score misZ: 0.63256 (below the threshold of 3.09). GenCC associations: The gene is linked to spermatogenic failure 16.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.881

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SUN5	NM_080675.4 link	c.638C>G	p.Thr213Arg	missense_variant	Exon 10 of 13	ENST00000356173.8	NP_542406.2	Q8TC36A0A384MDU5
SUN5	XM_011528573.2 link	c.707C>G	p.Thr236Arg	missense_variant	Exon 11 of 14		XP_011526875.1
SUN5	XM_011528574.2 link	c.563C>G	p.Thr188Arg	missense_variant	Exon 9 of 12		XP_011526876.1	A9Z1W8
SUN5	XM_011528575.2 link	c.368C>G	p.Thr123Arg	missense_variant	Exon 8 of 11		XP_011526877.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SUN5	ENST00000356173.8 link	c.638C>G	p.Thr213Arg	missense_variant	Exon 10 of 13	1	NM_080675.4	ENSP00000348496.3		Q8TC36
SUN5	ENST00000375523.7 link	c.563C>G	p.Thr188Arg	missense_variant	Exon 9 of 12	5		ENSP00000364673.3		A9Z1W8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461020

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726636

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:

33476

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26118

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

85830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111730

Other (OTH)

AF:

0.00

AC:

AN:

60376

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.91

BayesDel_addAF

Uncertain

0.039

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.38

.;T

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.77

T;T

M_CAP

Benign

0.026

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Pathogenic

3.0

.;M

PhyloP100

4.0

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-4.5

D;D

REVEL

Benign

0.25

Sift

Benign

0.037

D;T

Sift4G

Uncertain

0.057

T;T

Polyphen

0.97

.;D

Vest4

0.79

MutPred

0.75

.;Loss of glycosylation at T213 (P = 0.0892);

MVP

0.20

MPC

0.64

ClinPred

0.99

GERP RS

5.0

Varity_R

0.54

gMVP

0.84

Mutation Taster

=72/28

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.37

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.37

Position offset: 24

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

Publications

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20-32987751-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over