NM_031448.6:c.238C>T

Variant names:

• chr19-29702900-G-A
• rs753364652
• NM_031448.6:c.238C>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Moderate BP6_Moderate

The NM_031448.6(C19orf12):​c.238C>T​(p.Leu80Leu) variant causes a synonymous change. The variant allele was found at a frequency of 0.0000157 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. L80L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000016 (0 hom.)
• Consequence: C19orf12 NM_031448.6 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.84
• Publications: 2 publications found

Genes affected

C19orf12 (HGNC:25443): (chromosome 19 open reading frame 12) This gene encodes a small transmembrane protein. Mutations in this gene are a cause of neurodegeneration with brain iron accumulation-4 (NBIA4), but the specific function of the encoded protein is unknown. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

C19orf12 Gene-Disease associations (from GenCC):

• neurodegeneration with brain iron accumulation 4

  Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Ambry Genetics, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Illumina
• hereditary spastic paraplegia 43

  Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP6: Variant 19-29702900-G-A is Benign according to our data. Variant chr19-29702900-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 469657.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031448.6. 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
	C19orf12	NM_031448.6	MANE Select	c.238C>T	p.Leu80Leu	synonymous	Exon 3 of 3	NP_113636.2	Q9NSK7-4
	C19orf12	NM_001031726.4		c.238C>T	p.Leu80Leu	synonymous	Exon 3 of 3	NP_001026896.3	Q9NSK7-4
	C19orf12	NM_001256047.2		c.238C>T	p.Leu80Leu	synonymous	Exon 3 of 3	NP_001242976.1	Q9NSK7-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C19orf12	ENST00000323670.14	TSL:2 MANE Select	c.238C>T	p.Leu80Leu	synonymous	Exon 3 of 3	ENSP00000313332.9	Q9NSK7-4
	C19orf12	ENST00000592153.5	TSL:1	c.238C>T	p.Leu80Leu	synonymous	Exon 3 of 4	ENSP00000467117.1	Q9NSK7-3
	C19orf12	ENST00000591243.1	TSL:1	c.238C>T	p.Leu80Leu	synonymous	Exon 2 of 2	ENSP00000467516.1	K7EPS8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 249912 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000891

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000157 AC: 23 AN: 1461888 Hom.: 0 Cov.: 37 AF XY: 0.0000179 AC XY: 13 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000447 AC: 2 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000162 AC: 18 AN: 1112010

Other (OTH) AF: 0.0000497 AC: 3 AN: 60396

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000113

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary spastic paraplegia 43 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
CADD	Benign	14
DANN	Benign	0.47
PhyloP100		3.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs753364652; hg19: chr19-30193807;