Genetic disturbances in patients with bodily isomerism from a single center: clinical implications of affected genes and potential impact of ciliary dyskinesia

• Main Authors: Rohit S. Loomba, Peter C. Frommelt, Robert H. Anderson
• Format: Article
• Language: English
• Published: MDPI AG 2016-09-01
• Series: Cardiogenetics
• Subjects: CFC1; NODAL; heterotaxy.
• Online Access: http://www.pagepressjournals.org/index.php/cardiogen/article/view/5818

So-called heterotaxy or isomerism is characterized by abnormal lateralization and malformations of the bodily organs. The mechanism is unclear, although there is growing evidence that ciliary dyskinesia is involved. We reviewed genetic findings from patients with isomerism to determine if affected genes were known to be associated with isomerism and ciliary dyskinesia and determine associations between genotype and clinical findings. We identified patients with isomerism cared for over a 16- year period. Characteristics were compared between those with and without identified mutations. A total of 83 patients with isomerism were identified. Of those who had genotyping, 14/27 had mutations identified, most frequently involving the <em>CFC1</em> <em>and</em> <em>NODAL</em> genes. Specific mutations were associated with clinical findings, with <em>NODAL</em> mutations often portending need for increased clinical support. Genes associated with isomerism and/or ciliary dyskinesia were identified in the cohort. Specific gene mutations may help predict clinical course.