chr2-191836369-T-G

Position:

• chr2-191836369-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004657.6(CAVIN2):​c.832A>C​(p.Asn278His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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 (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CAVIN2 NM_004657.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.23

Genes affected

CAVIN2 (HGNC:10690): (caveolae associated protein 2) This gene encodes a calcium-independent phospholipid-binding protein whose expression increases in serum-starved cells. This protein is a substrate for protein kinase C (PKC) phosphorylation and recruits polymerase I and transcript release factor (PTRF) to caveolae. Removal of this protein causes caveolae loss and its over-expression results in caveolae deformation and membrane tubulation.[provided by RefSeq, Sep 2009]

ACMG classification

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=0.11132029).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CAVIN2	NM_004657.6	c.832A>C	p.Asn278His	missense_variant	2/2	ENST00000304141.5	NP_004648.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CAVIN2	ENST00000304141.5	c.832A>C	p.Asn278His	missense_variant	2/2	1	NM_004657.6	ENSP00000305675	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

May 24, 2024

The c.832A>C (p.N278H) alteration is located in exon 2 (coding exon 2) of the SDPR gene. This alteration results from a A to C substitution at nucleotide position 832, causing the asparagine (N) at amino acid position 278 to be replaced by a histidine (H). 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	0.085
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.042	T
Eigen	Benign	-0.12
Eigen_PC	Benign	0.027
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.90	T
MutationTaster	Benign	0.96	D
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.0	N
REVEL	Benign	0.081
Sift	Benign	0.28	T
Sift4G	Benign	0.35	T
Polyphen		0.058	B
Vest4		0.11
MutPred		0.20		Loss of loop (P = 0.0022);
MVP		0.35
MPC		0.31
ClinPred		0.18	T
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.087
gMVP		0.11

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: chr2-192701095;