X-10449424-T-G

Variant names:

• chrX-10449424-T-G
• rs2147252264
• NM_000381.4:c.1948A>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000381.4(MID1):​c.1948A>C​(p.Ile650Leu) variant causes a missense 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 1 hem.)
  • Failed GnomAD Quality Control
• Consequence: MID1 NM_000381.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.55
• Publications: 0 publications found

Genes affected

MID1 (HGNC:7095): (midline 1) The protein encoded by this gene is a member of the tripartite motif (TRIM) family, also known as the 'RING-B box-coiled coil' (RBCC) subgroup of RING finger proteins. The TRIM motif includes three zinc-binding domains, a RING, a B-box type 1 and a B-box type 2, and a coiled-coil region. This protein forms homodimers which associate with microtubules in the cytoplasm. The protein is likely involved in the formation of multiprotein structures acting as anchor points to microtubules. Mutations in this gene have been associated with the X-linked form of Opitz syndrome, which is characterized by midline abnormalities such as cleft lip, laryngeal cleft, heart defects, hypospadias, and agenesis of the corpus callosum. This gene was also the first example of a gene subject to X inactivation in human while escaping it in mouse. Alternative promoter use, alternative splicing and alternative polyadenylation result in multiple transcript variants that have different tissue specificities. [provided by RefSeq, Dec 2016]

MID1 Gene-Disease associations (from GenCC):

• X-linked Opitz G/BBB syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen, G2P, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.34773695).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000381.4. 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
	MID1	NM_000381.4	MANE Select	c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	NP_000372.1	O15344-1
	MID1	NM_001098624.2		c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	NP_001092094.1	O15344-1
	MID1	NM_001193277.1		c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	NP_001180206.1	O15344-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MID1	ENST00000317552.9	TSL:1 MANE Select	c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	ENSP00000312678.4	O15344-1
	MID1	ENST00000380779.5	TSL:1	c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	ENSP00000370156.1	O15344-1
	MID1	ENST00000380780.5	TSL:1	c.1948A>C	p.Ile650Leu	missense	Exon 10 of 10	ENSP00000370157.1	O15344-1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 9.11e-7 AC: 1 AN: 1098174 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 1 AN XY: 363544

African (AFR) AF: 0.00 AC: 0 AN: 26402

American (AMR) AF: 0.00 AC: 0 AN: 35207

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19384

East Asian (EAS) AF: 0.00 AC: 0 AN: 30195

South Asian (SAS) AF: 0.00 AC: 0 AN: 54141

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40531

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4127

European-Non Finnish (NFE) AF: 0.00000119 AC: 1 AN: 842095

Other (OTH) AF: 0.00 AC: 0 AN: 46092

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.29
BayesDel_addAF	Benign	-0.052	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.21	T
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.26	D
MetaRNN	Benign	0.35	T
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	1.4	L
PhyloP100		2.5
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-0.61	N
REVEL	Benign	0.25
Sift	Uncertain	0.0070	D
Sift4G	Benign	0.077	T
Polyphen		0.11	B
Vest4		0.40
MutPred		0.55		Loss of sheet (P = 0.0457)
MVP		0.72
MPC		1.3
ClinPred		0.85	D
GERP RS		5.5
Varity_R		0.53
gMVP		0.68
Mutation Taster		=91/9	polymorphism

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: rs2147252264; hg19: chrX-10417464;