chr1-46219789-C-T

Variant names:

• chr1-46219789-C-T
• rs776263232
• NM_001013615.3:c.289C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001013615.3(LURAP1):​c.289C>T​(p.Arg97Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: LURAP1 NM_001013615.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.779
• Publications: 3 publications found

Genes affected

LURAP1 (HGNC:32327): (leucine rich adaptor protein 1) Involved in positive regulation of I-kappaB kinase/NF-kappaB signaling and positive regulation of cytokine production. Located in cytosol and intracellular membrane-bounded organelle. [provided by Alliance of Genome Resources, Apr 2022]

POMGNT1 (HGNC:19139): (protein O-linked mannose N-acetylglucosaminyltransferase 1 (beta 1,2-)) This gene encodes a type II transmembrane protein that resides in the Golgi apparatus. It participates in O-mannosyl glycosylation and is specific for alpha linked terminal mannose. Mutations in this gene may be associated with muscle-eye-brain disease and several congenital muscular dystrophies. Alternatively spliced transcript variants that encode different protein isoforms have been described. [provided by RefSeq, Feb 2014]

POMGNT1 Gene-Disease associations (from GenCC):

• autosomal recessive limb-girdle muscular dystrophy type 2O

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Ambry Genetics
• muscle-eye-brain disease

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Myriad Women’s Health, Orphanet
• muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A3

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
• muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B3

  Inheritance: AR Classification: DEFINITIVE, LIMITED Submitted by: Ambry Genetics, G2P
• myopathy caused by variation in POMGNT1

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• retinitis pigmentosa 76

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• congenital muscular dystrophy with cerebellar involvement

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• muscular dystrophy-dystroglycanopathy, type A

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001013615.3. 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
	LURAP1	NM_001013615.3	MANE Select	c.289C>T	p.Arg97Trp	missense	Exon 2 of 2	NP_001013633.1	Q96LR2
	POMGNT1	NM_001243766.2		c.-135G>A		5_prime_UTR	Exon 1 of 23	NP_001230695.2	Q8WZA1-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LURAP1	ENST00000371980.4	TSL:1 MANE Select	c.289C>T	p.Arg97Trp	missense	Exon 2 of 2	ENSP00000361048.3	Q96LR2
	POMGNT1	ENST00000371992.1	TSL:2	c.-135G>A		5_prime_UTR	Exon 1 of 23	ENSP00000361060.1	Q8WZA1-2
	POMGNT1	ENST00000693223.1		n.514G>A		non_coding_transcript_exon	Exon 1 of 20

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000119 AC: 3 AN: 251200 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 20 AN: 1461804 Hom.: 0 Cov.: 31 AF XY: 0.0000151 AC XY: 11 AN XY: 727200

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.000101 AC: 4 AN: 39700

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86240

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53388

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000117 AC: 13 AN: 1111984

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.38
BayesDel_addAF	Benign	0.0027	T
BayesDel_noAF	Uncertain	-0.010
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.17	T
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.048	D
MetaRNN	Uncertain	0.55	D
MetaSVM	Benign	-0.41	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		0.78
PrimateAI	Uncertain	0.48	T
PROVEAN	Pathogenic	-6.2	D
REVEL	Uncertain	0.29
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.58
MutPred		0.30		Gain of catalytic residue at R97 (P = 0.007)
MVP		0.36
MPC		0.83
ClinPred		0.98	D
GERP RS		2.7
Varity_R		0.51
gMVP		0.50
Mutation Taster		=83/17	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: rs776263232; hg19: chr1-46685461;