NM_014319.5:c.864A>C

Variant names:

• chr12-65170460-A-C
• NM_014319.5:c.864A>C
• LEMD3 p.Arg288Arg

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_014319.5(LEMD3):​c.864A>C​(p.Arg288Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
• Consequence: LEMD3 NM_014319.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.871
• Publications: 0 publications found

Genes affected

LEMD3 (HGNC:28887): (LEM domain containing 3) This locus encodes a LEM domain-containing protein. The encoded protein functions to antagonize transforming growth factor-beta signaling at the inner nuclear membrane. Two transcript variants encoding different isoforms have been found for this gene. Mutations in this gene have been associated with osteopoikilosis, Buschke-Ollendorff syndrome and melorheostosis.[provided by RefSeq, Nov 2009]

LEMD3 Gene-Disease associations (from GenCC):

• Buschke-Ollendorff syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
• isolated osteopoikilosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• melorheostosis with osteopoikilosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.66).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014319.5. 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
	LEMD3	NM_014319.5	MANE Select	c.864A>C	p.Arg288Arg	synonymous	Exon 1 of 13	NP_055134.2
	LEMD3	NM_001167614.2		c.864A>C	p.Arg288Arg	synonymous	Exon 1 of 13	NP_001161086.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LEMD3	ENST00000308330.3	TSL:1 MANE Select	c.864A>C	p.Arg288Arg	synonymous	Exon 1 of 13	ENSP00000308369.2	Q9Y2U8
	LEMD3	ENST00000883212.1		c.864A>C	p.Arg288Arg	synonymous	Exon 1 of 13	ENSP00000553271.1
	LEMD3	ENST00000935241.1		c.864A>C	p.Arg288Arg	synonymous	Exon 1 of 13	ENSP00000605300.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.66
CADD	Benign	13
DANN	Benign	0.69
PhyloP100		0.87
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr12-65564240;