Retina TULP1 Mutations Causing Early-Onset Retinal Degeneration: Preserved but Insensitive Macular Cones Samuel G. Jacobson,1 Artur V. Cideciyan,1 Wei Chieh Huang,1 Alexander Sumaroka,1 Alejandro J. Roman,1 Sharon B. Schwartz,1 Xunda Luo,1 Rebecca Sheplock,1 Joanna M. Dauber,1 Malgorzata Swider,1 and Edwin M. Stone2,3 1Scheie Eye Institute, Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States 2Department of Ophthalmology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States 3Howard Hughes Medical Institute, Iowa City, Iowa, United States Correspondence: Samuel G. Jacob- PURPOSE. To investigate visual function and outer and inner retinal structure in the rare form of son, Scheie Eye Institute, University retinal degeneration (RD) caused by TULP1 (tubby-like protein 1) mutations. of Pennsylvania, 51 N. 39th Street, Philadelphia, PA 19104, USA; METHODS. Retinal degeneration patients with TULP1 mutations (n ¼ 5; age range, 5–36 years)
[email protected]. were studied by kinetic and chromatic static perimetry, en face autofluorescence imaging, and spectral-domain optical coherence tomography (OCT) scans. Outer and inner retinal Submitted: April 10, 2014 Accepted: July 13, 2014 laminar thickness were measured and mapped across the central retina. Comparisons were made with results from patients with RD associated with four ciliopathy genotypes (MAK, Citation: Jacobson SG, Cideciyan AV, RPGR, BBS1, and USH2A). Huang WC, et al. TULP1 mutations causing early-onset retinal degenera- RESULTS. The TULP1-RD patients were severely affected already in the first decade of life and tion: preserved but insensitive macu- there was rapidly progressive visual loss.