rs762216368

Variant names:

• chr9-128607985-G-A
• rs762216368
• NM_001130438.3:c.4280G>A

Your query was ambiguous. Multiple possible variants found:

• chr9-128607985-G-A
• chr9-128607985-G-T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3 BP6 BS2

The NM_001130438.3(SPTAN1):​c.4280G>A​(p.Arg1427His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000204 in 1,613,994 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1427C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000021 (0 hom.)
• Consequence: SPTAN1 NM_001130438.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:1
• Conservation: PhyloP100: 9.92
• Publications: 0 publications found

Genes affected

SPTAN1 (HGNC:11273): (spectrin alpha, non-erythrocytic 1) Spectrins are a family of filamentous cytoskeletal proteins that function as essential scaffold proteins that stabilize the plasma membrane and organize intracellular organelles. Spectrins are composed of alpha and beta dimers that associate to form tetramers linked in a head-to-head arrangement. This gene encodes an alpha spectrin that is specifically expressed in nonerythrocytic cells. The encoded protein has been implicated in other cellular functions including DNA repair and cell cycle regulation. Mutations in this gene are the cause of early infantile epileptic encephalopathy-5. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Sep 2010]

SPTAN1 Gene-Disease associations (from GenCC):

• developmental and epileptic encephalopathy, 5

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, G2P, Ambry Genetics
• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• neuronopathy, distal hereditary motor, autosomal dominant 11

  Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
• spastic paraplegia 91, autosomal dominant, with or without cerebellar ataxia

  Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
• infantile spasms

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary spastic paraplegia

  Inheritance: AR Classification: LIMITED Submitted by: PanelApp Australia

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.776
• BP6: Variant 9-128607985-G-A is Benign according to our data. Variant chr9-128607985-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 207291.
• BS2: High AC in GnomAdExome4 at 30 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001130438.3. 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
	SPTAN1	NM_001130438.3	MANE Select	c.4280G>A	p.Arg1427His	missense	Exon 33 of 57	NP_001123910.1	Q13813-2
	SPTAN1	NM_001375318.1		c.4316G>A	p.Arg1439His	missense	Exon 34 of 59	NP_001362247.1
	SPTAN1	NM_001375310.1		c.4280G>A	p.Arg1427His	missense	Exon 33 of 58	NP_001362239.1	A0A994J6W3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPTAN1	ENST00000372739.7	TSL:1 MANE Select	c.4280G>A	p.Arg1427His	missense	Exon 33 of 57	ENSP00000361824.4	Q13813-2
	SPTAN1	ENST00000372731.8	TSL:1	c.4280G>A	p.Arg1427His	missense	Exon 33 of 56	ENSP00000361816.4	Q13813-1
	SPTAN1	ENST00000358161.9	TSL:1	c.4220G>A	p.Arg1407His	missense	Exon 32 of 55	ENSP00000350882.6	Q13813-3

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152124 Hom.: 0 Cov.: 31

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000398 AC: 10 AN: 251440 AF XY: 0.0000515

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000615

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000205 AC: 30 AN: 1461870 Hom.: 0 Cov.: 32 AF XY: 0.0000206 AC XY: 15 AN XY: 727240

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.0000225 AC: 25 AN: 1112012

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152124 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74318

African (AFR) AF: 0.00 AC: 0 AN: 41422

American (AMR) AF: 0.00 AC: 0 AN: 15268

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10600

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.0000264

ExAC AF: 0.0000494 AC: 6

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	Developmental and epileptic encephalopathy (1)
-	1	-	Developmental and epileptic encephalopathy, 5 (1)
-	-	1	Inborn genetic diseases (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.0095	T
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.42	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.016	T
MetaRNN	Pathogenic	0.78	D
MetaSVM	Benign	-0.44	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		9.9
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-3.6	D
REVEL	Uncertain	0.34
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.99	D
Vest4		0.74
MutPred		0.62		Gain of ubiquitination at K1432 (P = 0.0898)
MVP		0.60
MPC		2.1
ClinPred		0.80	D
GERP RS		5.6
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		2.1
Varity_R		0.56
gMVP		0.62
Mutation Taster		=27/73	disease causing

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

Other links and lift over

dbSNP: rs762216368; hg19: chr9-131370264; COSMIC: COSV100824046; COSMIC: COSV100824046;