Genetic Variant FAM111B:p.Lys55Thr (chr11-59124261-A-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_198947.4(FAM111B):c.164A>C(p.Lys55Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,194 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

FAM111B
NM_198947.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.17

Variant links:

Genes affected

FAM111B (HGNC:24200): (FAM111 trypsin like peptidase B) This gene encodes a protein with a trypsin-like cysteine/serine peptidase domain in the C-terminus. Mutations in this gene are associated with an autosomal dominant form of hereditary fibrosing poikiloderma (HFP). Affected individuals display mottled pigmentation, telangiectasia, epidermal atrophy, tendon contractures, and progressive pulmonary fibrosis. Alternative splicing results in multiple transcript variants encoding distinct isoforms. A paralog of this gene which also has a trypsin‐like peptidase domain, FAM111A, is located only 16 kb from this gene on human chromosome 11q12.1. [provided by RefSeq, Apr 2014]

FAM111B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12773615).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM111B	NM_198947.4 link	c.164A>C	p.Lys55Thr	missense_variant	Exon 4 of 4	ENST00000343597.4	NP_945185.1	Q6SJ93-1
FAM111B	NM_001142703.2 link	c.74A>C	p.Lys25Thr	missense_variant	Exon 3 of 3		NP_001136175.1	Q6SJ93-2
FAM111B	NM_001142704.2 link	c.74A>C	p.Lys25Thr	missense_variant	Exon 2 of 2		NP_001136176.1	Q6SJ93-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM111B	ENST00000343597.4 link	c.164A>C	p.Lys55Thr	missense_variant	Exon 4 of 4	1	NM_198947.4	ENSP00000341565.3		Q6SJ93-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250790

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135550

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Sep 28, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.164A>C (p.K55T) alteration is located in exon 4 (coding exon 2) of the FAM111B gene. This alteration results from a A to C substitution at nucleotide position 164, causing the lysine (K) at amino acid position 55 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.57

CADD

Benign

1.3

DANN

Uncertain

0.99

DEOGEN2

Benign

0.055

.;.;.;T;T

Eigen

Benign

-0.98

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.0067

LIST_S2

Benign

0.49

T;.;T;.;T

M_CAP

Benign

0.0046

MetaRNN

Benign

0.13

T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.0

.;.;.;M;M

PrimateAI

Benign

0.34

PROVEAN

Benign

-1.9

N;N;N;N;.

REVEL

Benign

0.020

Sift

Uncertain

0.0070

D;D;D;D;.

Sift4G

Uncertain

0.031

D;D;T;D;D

Polyphen

0.16

.;.;.;B;B

Vest4

0.12

MutPred

0.29

.;.;.;Loss of MoRF binding (P = 0.027);Loss of MoRF binding (P = 0.027);

MVP

0.32

MPC

0.20

ClinPred

0.056

GERP RS

-3.2

Varity_R

0.10

gMVP

0.26

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