X-10523193-CAAAAAAAA-CA

Position:

• chrX-10523193-CAAAAAAAA-CA

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000381.4(MID1):​c.661-13_661-7delTTTTTTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000636 in 786,412 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000044 (0 hom., 0 hem., cov: 19)
  • Exomes 𝑓: 0.0000040 (0 hom. 0 hem.)
• Consequence: MID1 NM_000381.4 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.499

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MID1	NM_000381.4	c.661-13_661-7delTTTTTTT		splice_region_variant, intron_variant		ENST00000317552.9	NP_000372.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MID1	ENST00000317552.9	c.661-13_661-7delTTTTTTT		splice_region_variant, intron_variant		1	NM_000381.4	ENSP00000312678.4
MID1	ENST00000380782.6	c.661-13_661-7delTTTTTTT		splice_region_variant, intron_variant		1		ENSP00000370159.1

Frequencies

GnomAD3 genomes AF: 0.0000440 AC: 2 AN: 45447 Hom.: 0 Cov.: 19 AF XY: 0.00 AC XY: 0 AN XY: 9019

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000955

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000405 AC: 3 AN: 740965 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 206255

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000533

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000440 AC: 2 AN: 45447 Hom.: 0 Cov.: 19 AF XY: 0.00 AC XY: 0 AN XY: 9019

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000955

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs375668839; hg19: chrX-10491233;