chr5-132752107-A-C

Position:

• chr5-132752107-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001098811.2(SEPTIN8):​c.1361T>G​(p.Val454Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SEPTIN8 NM_001098811.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.82

Genes affected

SEPTIN8 (HGNC:16511): (septin 8) This gene is a member of the septin 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. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]

CCNI2 (HGNC:33869): (cyclin I family member 2) Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Predicted to be involved in mitotic cell cycle phase transition and regulation of cyclin-dependent protein serine/threonine kinase activity. Predicted to be part of cyclin-dependent protein kinase holoenzyme complex. Predicted to be active in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEPTIN8	NM_001098811.2	c.1361T>G	p.Val454Gly	missense_variant	10/10	ENST00000378719.7
CCNI2	NM_001039780.4	c.916A>C	p.Thr306Pro	missense_variant	5/6	ENST00000378731.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SEPTIN8	ENST00000378719.7	c.1361T>G	p.Val454Gly	missense_variant	10/10	1	NM_001098811.2	P3
CCNI2	ENST00000378731.6	c.916A>C	p.Thr306Pro	missense_variant	5/6	1	NM_001039780.4	A2
CCNI2	ENST00000614847.1	c.964A>C	p.Thr322Pro	missense_variant	5/6	1		P2
SEPTIN8	ENST00000481030.1	n.142T>G		non_coding_transcript_exon_variant	2/2	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 15, 2023

The c.916A>C (p.T306P) alteration is located in exon 5 (coding exon 5) of the CCNI2 gene. This alteration results from a A to C substitution at nucleotide position 916, causing the threonine (T) at amino acid position 306 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	Pathogenic	0.68
BayesDel_addAF	Uncertain	0.027	T
BayesDel_noAF	Benign	-0.20
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	T;.
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.070	D
MetaRNN	Uncertain	0.55	D;D
MetaSVM	Benign	-0.69	T
MutationAssessor	Uncertain	2.2	M;.
MutationTaster	Benign	1.0	D;D
PROVEAN	Uncertain	-2.8	D;.
REVEL	Uncertain	0.43
Sift	Uncertain	0.026	D;.
Sift4G	Uncertain	0.014	D;D
Polyphen		0.99	D;.
Vest4		0.59
MutPred		0.63		Loss of catalytic residue at T306 (P = 0.0632);.;
MVP		0.44
MPC		0.77
ClinPred		0.97	D
GERP RS		5.9
Varity_R		0.76
gMVP		0.83

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-132087799;