7-22942323-G-A

Variant summary

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

The NM_032581.4(HYCC1):c.*3266C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0636 in 152,096 control chromosomes in the GnomAD database, including 412 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.064 (412 hom., cov: 32)
  • Failed GnomAD Quality Control
• Consequence: HYCC1 NM_032581.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.133

Genes affected

HYCC1 (HGNC:24587): (hyccin PI4KA lipid kinase complex subunit 1) The protein encoded by this gene may play a part in the beta-catenin/Lef signaling pathway. Expression of this gene is down-regulated by beta-catenin. Defects in this gene are a cause of hypomyelination with congenital cataract (HCC). [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 7-22942323-G-A is Benign according to our data. Variant chr7-22942323-G-A is described in ClinVar as [Benign]. Clinvar id is 359724.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0944 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HYCC1	NM_032581.4	c.*3266C>T		3_prime_UTR_variant	11/11	ENST00000432176.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HYCC1	ENST00000432176.7	c.*3266C>T		3_prime_UTR_variant	11/11	1	NM_032581.4

Frequencies

GnomAD3 genomes AF: 0.0637 AC: 9680 AN: 151978 Hom.: 412 Cov.: 32

Gnomad AFR AF: 0.0162

Gnomad AMI AF: 0.0274

Gnomad AMR AF: 0.0560

Gnomad ASJ AF: 0.0906

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.0242

Gnomad FIN AF: 0.0917

Gnomad MID AF: 0.0981

Gnomad NFE AF: 0.0964

Gnomad OTH AF: 0.0690

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

GnomAD4 genome AF: 0.0636 AC: 9678 AN: 152096 Hom.: 412 Cov.: 32 AF XY: 0.0625 AC XY: 4645 AN XY: 74334

Gnomad4 AFR AF: 0.0162

Gnomad4 AMR AF: 0.0559

Gnomad4 ASJ AF: 0.0906

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.0251

Gnomad4 FIN AF: 0.0917

Gnomad4 NFE AF: 0.0964

Gnomad4 OTH AF: 0.0678

Alfa AF: 0.0334 Hom.: 31

Bravo AF: 0.0582

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hypomyelination and Congenital Cataract Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
Cadd	Benign	3.6
Dann	Benign	0.65

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: rs75393023; hg19: chr7-22981942;