X-136207151-T-C

Variant names:

• chrX-136207151-T-C
• rs756434530
• NM_001159702.3:c.292T>C

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1 PM2

The NM_001159699.2(FHL1):​c.340T>C​(p.Ser114Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S114T) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 23)
• Consequence: FHL1 NM_001159699.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.55
• Publications: 0 publications found

Genes affected

FHL1 (HGNC:3702): (four and a half LIM domains 1) This gene encodes a member of the four-and-a-half-LIM-only protein family. Family members contain two highly conserved, tandemly arranged, zinc finger domains with four highly conserved cysteines binding a zinc atom in each zinc finger. Expression of these family members occurs in a cell- and tissue-specific mode and these proteins are involved in many cellular processes. Mutations in this gene have been found in patients with Emery-Dreifuss muscular dystrophy. Multiple alternately spliced transcript variants which encode different protein isoforms have been described.[provided by RefSeq, Nov 2009]

FHL1 Gene-Disease associations (from GenCC):

• X-linked myopathy with postural muscle atrophy

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
• myopathy, reducing body, X-linked, early-onset, severe

  Inheritance: XL Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• reducing body myopathy

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
• X-linked Emery-Dreifuss muscular dystrophy

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
• X-linked scapuloperoneal muscular dystrophy

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 11 uncertain in NM_001159699.2
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001159699.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FHL1	NM_001159702.3	MANE Plus Clinical	c.292T>C	p.Ser98Pro	missense	Exon 4 of 8	NP_001153174.1	Q13642-2
	FHL1	NM_001159699.2	MANE Select	c.340T>C	p.Ser114Pro	missense	Exon 3 of 6	NP_001153171.1	Q13642-5
	FHL1	NM_001440769.1		c.340T>C	p.Ser114Pro	missense	Exon 3 of 7	NP_001427698.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FHL1	ENST00000394155.8	TSL:5 MANE Plus Clinical	c.292T>C	p.Ser98Pro	missense	Exon 4 of 8	ENSP00000377710.2	Q13642-2
	FHL1	ENST00000370683.6	TSL:1 MANE Select	c.340T>C	p.Ser114Pro	missense	Exon 3 of 6	ENSP00000359717.1	Q13642-5
	FHL1	ENST00000543669.5	TSL:1	c.292T>C	p.Ser98Pro	missense	Exon 3 of 6	ENSP00000443333.1	Q13642-1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.64
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
FATHMM_MKL	Benign	0.24	N
LIST_S2	Uncertain	0.93	D
M_CAP	Uncertain	0.24	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		1.5
PrimateAI	Benign	0.38	T
PROVEAN	Uncertain	-3.6	D
REVEL	Uncertain	0.55
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.043	D
Polyphen		0.80	P
Vest4		0.54
MutPred		0.46		Loss of phosphorylation at S98 (P = 0.0522)
MVP		0.98
MPC		1.2
ClinPred		0.97	D
GERP RS		3.4
Varity_R		0.64
Mutation Taster		=74/26	polymorphism

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

Other links and lift over

dbSNP: rs756434530; hg19: chrX-135289310;