| Date | Panel | Item | Activity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mendeliome v1.4340 | PITX2 upstream regulatory region |
Sarah Milton Region: PITX2 upstream regulatory region was added Region: PITX2 upstream regulatory region was added to Mendeliome. Sources: Literature SV/CNV tags were added to Region: PITX2 upstream regulatory region. Mode of inheritance for Region: PITX2 upstream regulatory region was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for Region: PITX2 upstream regulatory region were set to PMID: 20881290, 28911203, 14991915, 9480756 Phenotypes for Region: PITX2 upstream regulatory region were set to Axenfeld-Rieger syndrome, MONDO:0019187 Review for Region: PITX2 upstream regulatory region was set to GREEN Added comment: PITX2 encodes a homeodomain containing transcription factor. There have been over 5 affected individuals across a number of publications with deletions in an agenic region approx 150kb upstream of PITX2 presenting with an Axenfeld Rieger phenotype. There have also been reports of individuals with balanced translocations transecting the region on 4p with a similar phenotype. Functional studies have interrogated this region identifying 11 conserved elements that are thought to represent enhancers. Zebrafish studies were performed by Volkmann et al with varying sized deletions in the region showing an effect on PITX2 gene expression. Protas et al used a zebrafish model modified by CRISPR/Cas9 to delete an orthologous region similar to that seen in an affected individual. This resulted in recapitulation of the phenotype. Note coordinates may not be precise (smaller deletions have been reported to cause disease). Sources: Literature |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||