19-1108347-G-C

Position:

• chr19-1108347-G-C

Variant summary

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

The NM_014963.3(SBNO2):​c.3974C>G​(p.Ala1325Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000173 in 1,154,888 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 (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000017 (0 hom.)
• Consequence: SBNO2 NM_014963.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.48

Genes affected

SBNO2 (HGNC:29158): (strawberry notch homolog 2) Predicted to enable chromatin DNA binding activity and histone binding activity. Involved in several processes, including cellular response to interleukin-6; macrophage activation involved in immune response; and negative regulation of transcription, DNA-templated. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

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=0.105109096).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SBNO2	NM_014963.3	c.3974C>G	p.Ala1325Gly	missense_variant	32/32	ENST00000361757.8	NP_055778.2
SBNO2	NM_001100122.2	c.3803C>G	p.Ala1268Gly	missense_variant	29/29		NP_001093592.1
SBNO2	XM_047438466.1	c.2777C>G	p.Ala926Gly	missense_variant	29/29		XP_047294422.1
SBNO2	XM_011527804.4	c.*304C>G		3_prime_UTR_variant	32/32		XP_011526106.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SBNO2	ENST00000361757.8	c.3974C>G	p.Ala1325Gly	missense_variant	32/32	1	NM_014963.3	ENSP00000354733.2
SBNO2	ENST00000587024.5	c.3944C>G	p.Ala1315Gly	missense_variant	32/32	2		ENSP00000468520.1
SBNO2	ENST00000438103.6	c.3803C>G	p.Ala1268Gly	missense_variant	29/29	2		ENSP00000400762.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000173 AC: 2 AN: 1154888 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 563320

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000124

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000224

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000227

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

Nov 12, 2021

The c.3974C>G (p.A1325G) alteration is located in exon 32 (coding exon 31) of the SBNO2 gene. This alteration results from a C to G substitution at nucleotide position 3974, causing the alanine (A) at amino acid position 1325 to be replaced by a glycine (G). 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	0.082
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	14
DANN	Benign	0.88
DEOGEN2	Benign	0.011	T;.;T
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.59
FATHMM_MKL	Benign	0.14	N
M_CAP	Benign	0.058	D
MetaRNN	Benign	0.11	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.4	L;.;.
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-0.55	N;N;.
REVEL	Benign	0.096
Sift	Uncertain	0.019	D;D;.
Sift4G	Uncertain	0.017	D;T;D
Polyphen		0.65	P;P;.
Vest4		0.085
MutPred		0.12		Gain of relative solvent accessibility (P = 0.1571);.;.;
MVP		0.23
MPC		0.41
ClinPred		0.17	T
GERP RS		2.8
Varity_R		0.13
gMVP		0.15

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

LitVar

Other links and lift over

dbSNP: rs905841315; hg19: chr19-1108346;