chr11-71448594-G-C

Position:

• chr11-71448594-G-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The ENST00000529369.2(DHCR7-DT):​n.33G>C variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0487 in 152,314 control chromosomes in the GnomAD database, including 612 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.049 (612 hom., cov: 35)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DHCR7-DT ENST00000529369.2 non_coding_transcript_exon
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.338

Genes affected

DHCR7-DT (HGNC:56822): (DHCR7 divergent transcript)

DHCR7 (HGNC:2860): (7-dehydrocholesterol reductase) This gene encodes an enzyme that removes the C(7-8) double bond in the B ring of sterols and catalyzes the conversion of 7-dehydrocholesterol to cholesterol. This gene is ubiquitously expressed and its transmembrane protein localizes to the endoplasmic reticulum membrane and nuclear outer membrane. Mutations in this gene cause Smith-Lemli-Opitz syndrome (SLOS); a syndrome that is metabolically characterized by reduced serum cholesterol levels and elevated serum 7-dehydrocholesterol levels and phenotypically characterized by cognitive disability, facial dysmorphism, syndactyly of second and third toes, and holoprosencephaly in severe cases to minimal physical abnormalities and near-normal intelligence in mild cases. Alternative splicing results in multiple transcript variants that encode the same protein.[provided by RefSeq, Aug 2009]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP6: Variant 11-71448594-G-C is Benign according to our data. Variant chr11-71448594-G-C is described in ClinVar as [Benign]. Clinvar id is 1231333.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.166 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DHCR7-DT	ENST00000529369.2	n.33G>C		non_coding_transcript_exon_variant	1/2	2
DHCR7	ENST00000527452.1	c.-131-860C>G		intron_variant		4		ENSP00000436007

Frequencies

GnomAD3 genomes AF: 0.0483 AC: 7358 AN: 152200 Hom.: 594 Cov.: 35

Gnomad AFR AF: 0.168

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0177

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000621

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00955

Gnomad NFE AF: 0.000559

Gnomad OTH AF: 0.0344

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 34 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 26

Gnomad4 SAS exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0487 AC: 7421 AN: 152314 Hom.: 612 Cov.: 35 AF XY: 0.0473 AC XY: 3525 AN XY: 74480

Gnomad4 AFR AF: 0.169

Gnomad4 AMR AF: 0.0176

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000194

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000559

Gnomad4 OTH AF: 0.0340

Alfa AF: 0.0389 Hom.: 59

Bravo AF: 0.0558

Asia WGS AF: 0.0130 AC: 46 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

May 20, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	0.92
DANN	Benign	0.36

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs10450662; hg19: chr11-71159640;