Genetic Variant SUN5:p.Val340Met (chr20-32983916-C-T) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP2

The NM_080675.4(SUN5):c.1018G>A(p.Val340Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000347 in 1,442,740 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V340L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

SUN5
NM_080675.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.506

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SUN5	NM_080675.4 link	c.1018G>A	p.Val340Met	missense_variant	Exon 13 of 13	ENST00000356173.8	NP_542406.2	Q8TC36A0A384MDU5
SUN5	XM_011528573.2 link	c.1087G>A	p.Val363Met	missense_variant	Exon 14 of 14		XP_011526875.1
SUN5	XM_011528574.2 link	c.943G>A	p.Val315Met	missense_variant	Exon 12 of 12		XP_011526876.1	A9Z1W8
SUN5	XM_011528575.2 link	c.748G>A	p.Val250Met	missense_variant	Exon 11 of 11		XP_011526877.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SUN5	ENST00000356173.8 link	c.1018G>A	p.Val340Met	missense_variant	Exon 13 of 13	1	NM_080675.4	ENSP00000348496.3		Q8TC36
SUN5	ENST00000375523.7 link	c.943G>A	p.Val315Met	missense_variant	Exon 12 of 12	5		ENSP00000364673.3		A9Z1W8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000347

AC:

AN:

1442740

Hom.:

Cov.:

AF XY:

0.00000419

AC XY:

AN XY:

716326

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32968

American (AMR)

AF:

0.00

AC:

AN:

42464

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25898

East Asian (EAS)

AF:

0.00

AC:

AN:

38498

South Asian (SAS)

AF:

0.00

AC:

AN:

81778

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53294

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5614

European-Non Finnish (NFE)

AF:

0.00000454

AC:

AN:

1102494

Other (OTH)

AF:

0.00

AC:

AN:

59732

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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.38

BayesDel_addAF

Uncertain

0.029

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.036

.;T

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.82

T;T

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.48

T;T

MetaSVM

Uncertain

-0.21

MutationAssessor

Benign

1.0

.;L

PhyloP100

0.51

PrimateAI

Uncertain

0.62

PROVEAN

Benign

0.070

N;N

REVEL

Uncertain

0.46

Sift

Benign

0.032

D;D

Sift4G

Benign

0.066

T;T

Polyphen

1.0

.;D

Vest4

0.48

MutPred

0.61

.;Gain of MoRF binding (P = 0.082);

MVP

0.35

MPC

0.39

ClinPred

0.89

GERP RS

2.5

Varity_R

0.13

gMVP

0.43

Mutation Taster

=77/23

polymorphism

(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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20-32983916-C-T

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