20-35954010-C-T

Position:

• chr20-35954010-C-T

Variant summary

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

The NM_033630.3(SCAND1):​c.275G>A​(p.Arg92His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000717 in 1,394,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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: 7.2e-7 (0 hom.)
• Consequence: SCAND1 NM_033630.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0650

Genes affected

SCAND1 (HGNC:10566): (SCAN domain containing 1) This gene encodes a SCAN box domain-containing protein. The SCAN domain is a highly conserved, leucine-rich motif of approximately 60 aa originally found within a subfamily of zinc finger proteins. This gene belongs to a family of genes that encode an isolated SCAN domain, but no zinc finger motif. This protein binds to and may regulate the function of the transcription factor myeloid zinc finger 1B. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]

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=0.0873006).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SCAND1	NM_033630.3	c.275G>A	p.Arg92His	missense_variant	2/2	ENST00000305978.7	NP_361012.3
SCAND1	NM_001385710.1	c.275G>A	p.Arg92His	missense_variant	3/3		NP_001372639.1
SCAND1	NM_016558.4	c.275G>A	p.Arg92His	missense_variant	3/3		NP_057642.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SCAND1	ENST00000305978.7	c.275G>A	p.Arg92His	missense_variant	2/2	1	NM_033630.3	ENSP00000301995.2
SCAND1	ENST00000373991.3	c.275G>A	p.Arg92His	missense_variant	3/3	1		ENSP00000363103.3
SCAND1	ENST00000615116.1	c.275G>A	p.Arg92His	missense_variant	3/3	5		ENSP00000481289.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.17e-7 AC: 1 AN: 1394964 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 687938

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 9.28e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Asia WGS AF: 0.000289 AC: 1 AN: 3478

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

Oct 10, 2023

The c.464G>A (p.R155H) alteration is located in exon 2 (coding exon 2) of the SCAND1 gene. This alteration results from a G to A substitution at nucleotide position 464, causing the arginine (R) at amino acid position 155 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	0.091
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.65
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.016	T;T;T
Eigen	Benign	-0.88
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.019	N
LIST_S2	Benign	0.47	.;T;.
M_CAP	Benign	0.0032	T
MetaRNN	Benign	0.087	T;T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.0	L;L;L
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-0.63	N;.;N
REVEL	Benign	0.086
Sift	Uncertain	0.024	D;.;D
Sift4G	Benign	0.18	T;T;T
Polyphen		0.0060	B;B;B
Vest4		0.075
MutPred		0.31		Gain of catalytic residue at R92 (P = 0.0211);Gain of catalytic residue at R92 (P = 0.0211);Gain of catalytic residue at R92 (P = 0.0211);
MVP		0.25
MPC		1.0
ClinPred		0.53	D
GERP RS		-0.043
Varity_R		0.074
gMVP		0.34

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr20-34541932;