NM_178483.3:c.364A>C

Variant names:

• chr20-18814179-A-C
• rs749077593
• NM_178483.3:c.364A>C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_178483.3(SCP2D1):​c.364A>C​(p.Lys122Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. K122E) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SCP2D1 NM_178483.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.65

Genes affected

SCP2D1 (HGNC:16211): (SCP2 sterol binding domain containing 1) Predicted to enable sterol binding activity. Predicted to be involved in phospholipid transport; positive regulation of intracellular cholesterol transport; and steroid biosynthetic process. [provided by Alliance of Genome Resources, Apr 2022]

SCP2D1-AS1 (HGNC:16210): (SCP2D1 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.862

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCP2D1	NM_178483.3	c.364A>C	p.Lys122Gln	missense_variant	Exon 1 of 1	ENST00000377428.4	NP_848578.1
SCP2D1-AS1	NR_161342.1	n.269-4064T>G		intron_variant	Intron 2 of 2
SCP2D1-AS1	NR_161343.1	n.245-4064T>G		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCP2D1	ENST00000377428.4	c.364A>C	p.Lys122Gln	missense_variant	Exon 1 of 1	6	NM_178483.3	ENSP00000366645.2
SCP2D1-AS1	ENST00000623418.1	n.219-4064T>G		intron_variant	Intron 2 of 2	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000119 AC: 3 AN: 251160 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135846

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461888 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727248

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000247 AC: 3

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.34
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.095	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.78	T
M_CAP	Benign	0.0098	T
MetaRNN	Pathogenic	0.86	D
MetaSVM	Benign	-0.61	T
MutationAssessor	Uncertain	2.9	M
PrimateAI	Uncertain	0.52	T
PROVEAN	Uncertain	-3.1	D
REVEL	Uncertain	0.46
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.99	D
Vest4		0.50
MutPred		0.77		Loss of catalytic residue at K122 (P = 0.0104);
MVP		0.27
MPC		0.43
ClinPred		0.95	D
GERP RS		6.1
Varity_R		0.64
gMVP		0.42

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: rs749077593; hg19: chr20-18794823;