chr3-45918928-G-C

Position:

• chr3-45918928-G-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_024513.4(FYCO1):​c.*2837C>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 0.0891 in 152,230 control chromosomes in the GnomAD database, including 994 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.089 (994 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FYCO1 NM_024513.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.105

Genes affected

FYCO1 (HGNC:14673): (FYVE and coiled-coil domain autophagy adaptor 1) The gene encodes a Rab7 adapter protein that is implicated in the microtubule transport of autophagosomes. The encoded protein contains a RUN domain, a FYVE-type zinc finger domain, and Golgi dynamics (GOLD) domain. The encoded protein plays a role in microtubule plus end-directed transport of autophagic vesicles through interactions with the small GTPase Rab7, phosphatidylinositol-3-phosphate (PI3P), the autophagosome marker LC3, and the kinesin KIF5. Mutations in this gene are associated with inclusion body myositis (IBM) and autosomal recessive congenital cataracts (CATC2). [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 3-45918928-G-C is Benign according to our data. Variant chr3-45918928-G-C is described in ClinVar as [Benign]. Clinvar id is 345449.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.331 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FYCO1	NM_024513.4	c.*2837C>G		3_prime_UTR_variant	18/18	ENST00000296137.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FYCO1	ENST00000296137.7	c.*2837C>G		3_prime_UTR_variant	18/18	1	NM_024513.4	P1
FYCO1	ENST00000433878.5	c.*2490C>G		3_prime_UTR_variant	7/7	2

Frequencies

GnomAD3 genomes AF: 0.0892 AC: 13572 AN: 152112 Hom.: 996 Cov.: 32

Gnomad AFR AF: 0.0181

Gnomad AMI AF: 0.230

Gnomad AMR AF: 0.0693

Gnomad ASJ AF: 0.197

Gnomad EAS AF: 0.00308

Gnomad SAS AF: 0.344

Gnomad FIN AF: 0.143

Gnomad MID AF: 0.184

Gnomad NFE AF: 0.109

Gnomad OTH AF: 0.0961

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 24 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 16

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

GnomAD4 genome AF: 0.0891 AC: 13565 AN: 152230 Hom.: 994 Cov.: 32 AF XY: 0.0948 AC XY: 7055 AN XY: 74446

Gnomad4 AFR AF: 0.0180

Gnomad4 AMR AF: 0.0692

Gnomad4 ASJ AF: 0.197

Gnomad4 EAS AF: 0.00309

Gnomad4 SAS AF: 0.345

Gnomad4 FIN AF: 0.143

Gnomad4 NFE AF: 0.109

Gnomad4 OTH AF: 0.0970

Alfa AF: 0.103 Hom.: 139

Bravo AF: 0.0734

Asia WGS AF: 0.174 AC: 605 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Cataract 18 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. -

not provided Benign:1

Benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.69
DANN	Benign	0.69

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: rs1994491; hg19: chr3-45960420;