9-13192321-C-A

Variant names:

• chr9-13192321-C-A
• rs1331676
• NM_001378778.1:c.1804-26G>T

Variant summary

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

The NM_001378778.1(MPDZ):​c.1804-26G>T variant causes a intron 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)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MPDZ NM_001378778.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0450
• Publications: 5 publications found

Genes affected

MPDZ (HGNC:7208): (multiple PDZ domain crumbs cell polarity complex component) The protein encoded by this gene has multiple PDZ domains, which are hallmarks of protein-protein interactions. The encoded protein is known to interact with the HTR2C receptor and may cause it to clump at the cell surface. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2015]

MPDZ Gene-Disease associations (from GenCC):

• hydrocephalus, nonsyndromic, autosomal recessive 2

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Laboratory for Molecular Medicine, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P

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=-0.81).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001378778.1. 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
	MPDZ	NM_001378778.1	MANE Select	c.1804-26G>T		intron	N/A	NP_001365707.1	O75970-1
	MPDZ	NM_001375413.1		c.1804-26G>T		intron	N/A	NP_001362342.1
	MPDZ	NM_001330637.2		c.1804-26G>T		intron	N/A	NP_001317566.1	O75970-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MPDZ	ENST00000319217.12	TSL:5 MANE Select	c.1804-26G>T		intron	N/A	ENSP00000320006.7	O75970-1
	MPDZ	ENST00000541718.5	TSL:1	c.1804-26G>T		intron	N/A	ENSP00000439807.1	O75970-2
	MPDZ	ENST00000447879.6	TSL:1	c.1804-26G>T		intron	N/A	ENSP00000415208.1	O75970-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000534 AC: 1 AN: 187116 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000128

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1415022 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 699938

African (AFR) AF: 0.00 AC: 0 AN: 32524

American (AMR) AF: 0.00 AC: 0 AN: 38004

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25334

East Asian (EAS) AF: 0.00 AC: 0 AN: 37906

South Asian (SAS) AF: 0.00 AC: 0 AN: 80504

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50834

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5688

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1085610

Other (OTH) AF: 0.00 AC: 0 AN: 58618

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	1.0
DANN	Benign	0.30
PhyloP100		0.045

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: rs1331676; hg19: chr9-13192320;