Variant chr16-74713369-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_024306.5(FA2H):c.*821C>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00276 in 152,354 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0028 ( 3 hom., cov: 33)

Exomes 𝑓: 0.0033 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FA2H
NM_024306.5 3_prime_UTR

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.452

Variant links:

Genes affected

FA2H (HGNC:21197): (fatty acid 2-hydroxylase) This gene encodes a protein that catalyzes the synthesis of 2-hydroxysphingolipids, a subset of sphingolipids that contain 2-hydroxy fatty acids. Sphingolipids play roles in many cellular processes and their structural diversity arises from modification of the hydrophobic ceramide moiety, such as by 2-hydroxylation of the N-acyl chain, and the existence of many different head groups. Mutations in this gene have been associated with leukodystrophy dysmyelinating with spastic paraparesis with or without dystonia.[provided by RefSeq, Mar 2010]

FA2H links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 16-74713369-G-C is Benign according to our data. Variant chr16-74713369-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 320470.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00276 (420/152354) while in subpopulation NFE AF= 0.00288 (196/68046). AF 95% confidence interval is 0.00255. There are 3 homozygotes in gnomad4. There are 208 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FA2H	NM_024306.5 linkuse as main transcript	c.*821C>G		3_prime_UTR_variant	7/7	ENST00000219368.8
FA2H	XM_011523319.3 linkuse as main transcript	c.*821C>G		3_prime_UTR_variant	7/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FA2H	ENST00000219368.8 linkuse as main transcript	c.*821C>G		3_prime_UTR_variant	7/7	1	NM_024306.5	P1	Q7L5A8-1
FA2H	ENST00000562145.1 linkuse as main transcript	n.1661C>G		non_coding_transcript_exon_variant	2/2	1

Frequencies

GnomAD3 genomes

AF:

0.00276

AC:

420

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000627

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00137

Gnomad ASJ

AF:

0.0256

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.00640

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00288

Gnomad OTH

AF:

0.00430

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00331

AC:

AN:

302

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

200

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00649

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00276

AC:

420

AN:

152354

Hom.:

Cov.:

AF XY:

0.00279

AC XY:

208

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.000625

Gnomad4 AMR

AF:

0.00137

Gnomad4 ASJ

AF:

0.0256

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00208

Gnomad4 FIN

AF:

0.00640

Gnomad4 NFE

AF:

0.00288

Gnomad4 OTH

AF:

0.00426

Alfa

AF:

0.00270

Hom.:

Bravo

AF:

0.00253

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 35

Benign:1

Likely 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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

2.5

DANN

Benign

0.72

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over