Genetic Variant NM_024513.4:c.4265C>A (chr3-45923752-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_024513.4(FYCO1):c.4265C>A(p.Thr1422Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,282 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1422M) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FYCO1
NM_024513.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.60

Publications

0 publications found

Variant links:

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]

FYCO1 Gene-Disease associations (from GenCC):

cataract 18
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
early-onset nuclear cataract
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
total early-onset cataract
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FYCO1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.31343353).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FYCO1	NM_024513.4 link	c.4265C>A	p.Thr1422Lys	missense_variant	Exon 17 of 18	ENST00000296137.7	NP_078789.2	Q9BQS8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FYCO1	ENST00000296137.7 link	c.4265C>A	p.Thr1422Lys	missense_variant	Exon 17 of 18	1	NM_024513.4	ENSP00000296137.2	Q9BQS8-1
FYCO1	ENST00000433878.5 link	c.629C>A	p.Thr210Lys	missense_variant	Exon 5 of 7	2		ENSP00000388136.1	H7BZ74
FYCO1	ENST00000438446.1 link	c.278C>A	p.Thr93Lys	missense_variant	Exon 5 of 6	5		ENSP00000398517.1	C9J2W6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461282

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727018

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111462

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.40

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0090

.;T;T

Eigen

Benign

-0.018

Eigen_PC

Benign

0.0057

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.84

T;D;D

M_CAP

Benign

0.019

MetaRNN

Benign

0.31

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.0

.;N;.

PhyloP100

2.6

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.5

N;N;N

REVEL

Benign

0.10

Sift

Uncertain

0.027

D;D;T

Sift4G

Uncertain

0.012

D;D;D

Polyphen

0.88

.;P;.

Vest4

0.51

MutPred

0.48

.;Gain of methylation at T1422 (P = 0.0244);.;

MVP

0.41

MPC

0.56

ClinPred

0.60

GERP RS

2.2

Varity_R

0.048

gMVP

0.37

Mutation Taster

=92/8

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over