10-100348146-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_005063.5(SCD):c.110C>G(p.Thr37Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,652 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SCD NM_005063.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.79

Genes affected

SCD (HGNC:10571): (stearoyl-CoA desaturase) This gene encodes an enzyme involved in fatty acid biosynthesis, primarily the synthesis of oleic acid. The protein belongs to the fatty acid desaturase family and is an integral membrane protein located in the endoplasmic reticulum. Transcripts of approximately 3.9 and 5.2 kb, differing only by alternative polyadenlyation signals, have been detected. A gene encoding a similar enzyme is located on chromosome 4 and a pseudogene of this gene is located on chromosome 17. [provided by RefSeq, Sep 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, SCD
• BP4: Computational evidence support a benign effect (MetaRNN=0.11924261).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SCD	NM_005063.5	c.110C>G	p.Thr37Arg	missense_variant	2/6	ENST00000370355.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SCD	ENST00000370355.3	c.110C>G	p.Thr37Arg	missense_variant	2/6	1	NM_005063.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251240 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135766

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: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461652 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 727144

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

Alfa AF: 0.0000193 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

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

Aug 13, 2021

The c.110C>G (p.T37R) alteration is located in exon 2 (coding exon 2) of the SCD gene. This alteration results from a C to G substitution at nucleotide position 110, causing the threonine (T) at amino acid position 37 to be replaced by an arginine (R). 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	0.061
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.51
Cadd	Benign	17
Dann	Benign	0.94
DEOGEN2	Benign	0.25	T
Eigen	Benign	-0.60
Eigen_PC	Benign	-0.47
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.3	L
MutationTaster	Benign	0.51	N
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.020	N
REVEL	Benign	0.097
Sift	Benign	0.10	T
Sift4G	Uncertain	0.010	D
Polyphen		0.045	B
Vest4		0.23
MutPred		0.28		Loss of phosphorylation at T37 (P = 0.0436);
MVP		0.34
MPC		0.76
ClinPred		0.10	T
GERP RS		3.9
Varity_R		0.055
gMVP		0.43

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: rs776589202; hg19: chr10-102107903;