22-19714623-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_002688.6(SEPTIN5):c.35C>T(p.Ala12Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000398 in 1,505,666 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict 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. A12A) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000030 ( 0 hom. )

Consequence

SEPTIN5
NM_002688.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.756

Variant links:

Genes affected

SEPTIN5 (HGNC:9164): (septin 5) This gene is a member of the septin gene family of nucleotide binding proteins, originally described in yeast as cell division cycle regulatory proteins. Septins are highly conserved in yeast, Drosophila, and mouse and appear to regulate cytoskeletal organization. Disruption of septin function disturbs cytokinesis and results in large multinucleate or polyploid cells. This gene is mapped to 22q11, the region frequently deleted in DiGeorge and velocardiofacial syndromes. A translocation involving the MLL gene and this gene has also been reported in patients with acute myeloid leukemia. Alternative splicing results in multiple transcript variants. The presence of a non-consensus polyA signal (AACAAT) in this gene also results in read-through transcription into the downstream neighboring gene (GP1BB; platelet glycoprotein Ib), whereby larger, non-coding transcripts are produced. [provided by RefSeq, Dec 2010]

SEPTIN5 links:

LOC124905079 (HGNC:):

LOC124905079 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=0.13275656).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEPTIN5	NM_002688.6 linkuse as main transcript	c.35C>T	p.Ala12Val	missense_variant	1/12	ENST00000455784.7
LOC124905079	XR_007068003.1 linkuse as main transcript	n.99+74G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	UniProt
SEPTIN5	ENST00000455784.7 linkuse as main transcript	c.35C>T	p.Ala12Val	missense_variant	1/12	1	NM_002688.6	Q99719-1
SEPTIN5	ENST00000406395.5 linkuse as main transcript	c.35C>T	p.Ala12Val	missense_variant	1/12	5
SEPTIN5	ENST00000406172.6 linkuse as main transcript	c.35C>T	p.Ala12Val	missense_variant, NMD_transcript_variant	1/10	5

Frequencies

GnomAD3 genomes

AF:

0.00000667

AC:

AN:

149844

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

GnomAD4 exome

AF:

0.00000295

AC:

AN:

1355710

Hom.:

Cov.:

AF XY:

0.00000299

AC XY:

AN XY:

669030

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000307

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000282

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000133

AC:

AN:

149956

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73266

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000298

Gnomad4 OTH

AF:

0.00

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 31, 2022

The c.35C>T (p.A12V) alteration is located in exon 1 (coding exon 1) of the SEPT5 gene. This alteration results from a C to T substitution at nucleotide position 35, causing the alanine (A) at amino acid position 12 to be replaced by a valine (V). 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

0.078

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.56

Cadd

Benign

Dann

Benign

0.97

DEOGEN2

Benign

0.12

T;.

Eigen

Benign

-0.93

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.46

LIST_S2

Benign

0.70

T;T

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

N;.

MutationTaster

Benign

0.99

N;N

PROVEAN

Benign

-0.65

N;N

REVEL

Benign

0.030

Sift

Benign

0.31

T;T

Sift4G

Benign

0.29

T;T

Polyphen

0.0070

B;.

Vest4

0.20

MutPred

0.24

Loss of helix (P = 0.0376);Loss of helix (P = 0.0376);

MVP

0.36

MPC

1.0

ClinPred

0.16

GERP RS

0.86

Varity_R

0.060

gMVP

0.48

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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