22-18913577-A-T

Variant names:

• chr22-18913577-A-T
• rs385440
• NM_016335.6:c.1527-51T>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_016335.6(PRODH):​c.1527-51T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. 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: 0)
• Consequence: PRODH NM_016335.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.514
• Publications: 18 publications found

Genes affected

PRODH (HGNC:9453): (proline dehydrogenase 1) This gene encodes a mitochondrial protein that catalyzes the first step in proline degradation. Mutations in this gene are associated with hyperprolinemia type 1 and susceptibility to schizophrenia 4 (SCZD4). This gene is located on chromosome 22q11.21, a region which has also been associated with the contiguous gene deletion syndromes, DiGeorge and CATCH22. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2010]

ENSG00000283809 (HGNC:):

DGCR6 (HGNC:2846): (DiGeorge syndrome critical region gene 6) DiGeorge syndrome, and more widely, the CATCH 22 syndrome, are associated with microdeletions in chromosomal region 22q11.2. The product of this gene shares homology with the Drosophila melanogaster gonadal protein, which participates in gonadal and germ cell development, and with the gamma-1 subunit of human laminin. This gene is a candidate for involvement in DiGeorge syndrome pathology and in schizophrenia. [provided by RefSeq, Nov 2008]

ACMG classification

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

• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016335.6. 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
	PRODH	NM_016335.6	MANE Select	c.1527-51T>A		intron	N/A	NP_057419.5
	PRODH	NM_001195226.2		c.1203-51T>A		intron	N/A	NP_001182155.2	O43272-2
	PRODH	NM_001368250.2		c.1203-51T>A		intron	N/A	NP_001355179.2	E7EQL6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRODH	ENST00000357068.11	TSL:1 MANE Select	c.1527-51T>A		intron	N/A	ENSP00000349577.6	O43272-4
	PRODH	ENST00000610940.4	TSL:1	c.1527-51T>A		intron	N/A	ENSP00000480347.1	O43272-4
	PRODH	ENST00000334029.6	TSL:1	c.1203-51T>A		intron	N/A	ENSP00000334726.2	O43272-2

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Uncertain	24
DANN	Benign	0.85
PhyloP100		-0.51

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.91		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.91		Position offset: -2

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

Other links and lift over

dbSNP: rs385440; hg19: chr22-18901090;