chr7-156686423-A-G

Position:

• chr7-156686423-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_022458.4(LMBR1):​c.1387+1607T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0754 in 152,250 control chromosomes in the GnomAD database, including 618 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.075 (618 hom., cov: 33)
• Consequence: LMBR1 NM_022458.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.497

Genes affected

LMBR1 (HGNC:13243): (limb development membrane protein 1) This gene encodes a member of the LMBR1-like membrane protein family. Another member of this protein family has been shown to be a lipocalin transmembrane receptor. A highly conserved, cis-acting regulatory module for the sonic hedgehog gene is located within an intron of this gene. Consequently, disruption of this genic region can alter sonic hedgehog expression and affect limb patterning, but it is not known if this gene functions directly in limb development. Mutations and chromosomal deletions and rearrangements in this genic region are associated with acheiropody and preaxial polydactyly, which likely result from altered sonic hedgehog expression. [provided by RefSeq, Jul 2008]

LMBR1 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.142 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LMBR1	NM_022458.4	c.1387+1607T>C		intron_variant		ENST00000353442.10	NP_071903.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LMBR1	ENST00000353442.10	c.1387+1607T>C		intron_variant		1	NM_022458.4	ENSP00000326604.7
LMBR1	ENST00000415428.5	c.1504+1607T>C		intron_variant		1		ENSP00000408256.1
LMBR1	ENST00000448926.5	n.*848-2260T>C		intron_variant		2		ENSP00000403052.1
LMBR1	ENST00000454132.5	n.*1424+1607T>C		intron_variant		2		ENSP00000414795.1

Frequencies

GnomAD3 genomes AF: 0.0753 AC: 11456 AN: 152132 Hom.: 616 Cov.: 33

Gnomad AFR AF: 0.143

Gnomad AMI AF: 0.0154

Gnomad AMR AF: 0.0895

Gnomad ASJ AF: 0.0133

Gnomad EAS AF: 0.151

Gnomad SAS AF: 0.0622

Gnomad FIN AF: 0.0445

Gnomad MID AF: 0.0348

Gnomad NFE AF: 0.0351

Gnomad OTH AF: 0.0703

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0754 AC: 11484 AN: 152250 Hom.: 618 Cov.: 33 AF XY: 0.0763 AC XY: 5681 AN XY: 74450

Gnomad4 AFR AF: 0.143

Gnomad4 AMR AF: 0.0902

Gnomad4 ASJ AF: 0.0133

Gnomad4 EAS AF: 0.151

Gnomad4 SAS AF: 0.0619

Gnomad4 FIN AF: 0.0445

Gnomad4 NFE AF: 0.0351

Gnomad4 OTH AF: 0.0696

Alfa AF: 0.0396 Hom.: 42

Bravo AF: 0.0822

Asia WGS AF: 0.0940 AC: 329 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	2.5
DANN	Benign	0.88

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: rs10242938; hg19: chr7-156479117;