2-54666042-G-C

Variant names:

• chr2-54666042-G-C
• rs760858477
• NM_003128.3:c.6787G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_003128.3(SPTBN1):​c.6787G>C​(p.Glu2263Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,420 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E2263K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SPTBN1 NM_003128.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.94
• Publications: 0 publications found

Genes affected

SPTBN1 (HGNC:11275): (spectrin beta, non-erythrocytic 1) Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. This gene is one member of a family of beta-spectrin genes. The encoded protein contains an N-terminal actin-binding domain, and 17 spectrin repeats which are involved in dimer formation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

SPTBN1-AS2 (HGNC:40563): (SPTBN1 antisense RNA 2)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003128.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPTBN1	NM_003128.3	MANE Select	c.6787G>C	p.Glu2263Gln	missense	Exon 34 of 36	NP_003119.2	Q01082-1
	SPTBN1-AS2	NR_186176.1		n.223-1201C>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPTBN1	ENST00000356805.9	TSL:1 MANE Select	c.6787G>C	p.Glu2263Gln	missense	Exon 34 of 36	ENSP00000349259.4	Q01082-1
	SPTBN1	ENST00000898760.1		c.6787G>C	p.Glu2263Gln	missense	Exon 34 of 36	ENSP00000568819.1
	SPTBN1	ENST00000898761.1		c.6787G>C	p.Glu2263Gln	missense	Exon 34 of 36	ENSP00000568820.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461420 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727014

African (AFR) AF: 0.00 AC: 0 AN: 33428

American (AMR) AF: 0.00 AC: 0 AN: 44612

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26114

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86136

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111872

Other (OTH) AF: 0.00 AC: 0 AN: 60376

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.42
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	D
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.43	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		9.9
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.26
Sift	Benign	0.079	T
Sift4G	Benign	0.10	T
Polyphen		0.47	P
Vest4		0.34
MutPred		0.73		Gain of MoRF binding (P = 0.0399)
MVP		0.49
MPC		0.92
ClinPred		0.93	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.26
gMVP		0.30
Mutation Taster		=62/38	polymorphism

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

Other links and lift over

dbSNP: rs760858477; hg19: chr2-54893179;