rs1555896387

Variant names:

• chrX-10501522-T-C
• rs1555896387
• ENST00000616003.5:c.794A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000616003.5(MID1):​c.794A>G​(p.Gln265Arg) 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. 9/10 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)
• Consequence: MID1 ENST00000616003.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.315
• 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: ClinGen, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07855204).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000616003.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MID1	NM_000381.4	MANE Select	c.757-5831A>G		intron	N/A	NP_000372.1
	MID1	NM_001193278.1		c.794A>G	p.Gln265Arg	missense	Exon 3 of 7	NP_001180207.1
	MID1	NM_001098624.2		c.757-5831A>G		intron	N/A	NP_001092094.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MID1	ENST00000616003.5	TSL:1	c.794A>G	p.Gln265Arg	missense	Exon 3 of 7	ENSP00000484712.1
	MID1	ENST00000317552.9	TSL:1 MANE Select	c.757-5831A>G		intron	N/A	ENSP00000312678.4
	MID1	ENST00000380779.5	TSL:1	c.757-5831A>G		intron	N/A	ENSP00000370156.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	X-linked Opitz G/BBB syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.83
CADD	Benign	3.7
DANN	Benign	0.74
DEOGEN2	Benign	0.0066	T
FATHMM_MKL	Benign	0.093	N
LIST_S2	Benign	0.29	T
MetaRNN	Benign	0.079	T
PhyloP100		-0.32
Sift4G	Uncertain	0.017	D
Vest4		0.12
MVP		0.37
GERP RS		2.6
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs1555896387; hg19: chrX-10469562;