NM_001122955.4:c.1335_1340delCTCTGAinsGTTCAG

Variant names:

• chr11-62690416-TCAGAG-CTGAAC
• NM_001122955.4:c.1335_1340delCTCTGAinsGTTCAG

Variant summary

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

The NM_001122955.4(BSCL2):​c.1335_1340delCTCTGAinsGTTCAG​(p.SerSerGlu445ArgPheArg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: BSCL2 NM_001122955.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.76
• Publications: 0 publications found

Genes affected

BSCL2 (HGNC:15832): (BSCL2 lipid droplet biogenesis associated, seipin) This gene encodes the multi-pass transmembrane protein protein seipin. This protein localizes to the endoplasmic reticulum and may be important for lipid droplet morphology. Mutations in this gene have been associated with congenital generalized lipodystrophy type 2 or Berardinelli-Seip syndrome, a rare autosomal recessive disease characterized by a near absence of adipose tissue and severe insulin resistance. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. Naturally occurring read-through transcription occurs between this locus and the neighboring locus HNRNPUL2 (heterogeneous nuclear ribonucleoprotein U-like 2).[provided by RefSeq, Mar 2011]

HNRNPUL2-BSCL2 (HGNC:49189): (HNRNPUL2-BSCL2 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring HNRNPUL2 (heterogeneous nuclear ribonucleoprotein U-like 2) and BSCL2 (Berardinelli-Seip congenital lipodystrophy 2 (seipin)) genes on chromosome 11. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is unlikely to produce a protein product. [provided by RefSeq, Mar 2011]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001122955.4. 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
	BSCL2	NM_001122955.4	MANE Select	c.1335_1340delCTCTGAinsGTTCAG	p.SerSerGlu445ArgPheArg	missense	N/A	NP_001116427.1	Q96G97-4
	BSCL2	NM_001386027.1		c.1341_1346delCTCTGAinsGTTCAG	p.SerSerGlu447ArgPheArg	missense	N/A	NP_001372956.1	J3KQ12
	BSCL2	NM_001386028.1		c.1335_1340delCTCTGAinsGTTCAG	p.SerSerGlu445ArgPheArg	missense	N/A	NP_001372957.1	Q96G97-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BSCL2	ENST00000360796.10	TSL:1 MANE Select	c.1335_1340delCTCTGAinsGTTCAG	p.SerSerGlu445ArgPheArg	missense	N/A	ENSP00000354032.5	Q96G97-4
	BSCL2	ENST00000405837.5	TSL:1	c.1341_1346delCTCTGAinsGTTCAG	p.SerSerGlu447ArgPheArg	missense	N/A	ENSP00000385332.1	J3KQ12
	BSCL2	ENST00000407022.7	TSL:1	c.1143_1148delCTCTGAinsGTTCAG	p.SerSerGlu381ArgPheArg	missense	N/A	ENSP00000384080.3	Q96G97-2

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Charcot-Marie-Tooth disease type 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.8

Splicing

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

Other links and lift over

hg19: chr11-62457888;