Neurogenetic Testing Laboratory

The Neurogenetics Testing Laboratory is the branch of the Baltimore Huntington's Disease Center that provides clinical genetic testing for HD and related diseases. The laboratory is CLIA and State of Maryland licensed, and under the supervision of the Johns Hopkins University School of Medicine Department of Pathology.

Laboratory Faculty
Russell L. Margolis, M.D, Director

Laboratory Staff
Colleen Callahan, B.A., Laboratory Technician

Recent Publications
Margolis RL, Stine, OC, Callahan Cc, Rosenblatt A, Abbott MH, Sherr M, Ross CA. Two novel single base pair substitutions adjacent to the CAG repeat in the Huntington Disease gene (IT15): Implications for diagnostic testing. American Journal of Human Genetics, 64 (1999):323-326.

Holmes SE, O'Hearn E, Callahan C, Hwang HS, Rosenblatt A, Ingersoll-Ashworth RG, Fleisher A, Stevanin G, Brice A, Potter NT, Ross CA, Margolis RL. A CTG trinucleotide repeat expansion in Junctophilin 3 is associated with Huntington's Disease-Like 2 (HDL2). Nature Genetics, 29 (2001): 377-378.

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Margolis RL, O'Hearn E, Rosenblatt A, Willour V, Holmes SE, Franz ML, Callahan C, Hwang HS, Troncoso JC, Ross CA. A disorder similar to Huntington's disease is associated with a novel CAG repeat expansion. Annals of Neurology, 50 (2001):373-380.

O'Hearn E, Holmes SE, Calvert PC, Ross CA, Margolis RL. SCA12: Tremor with cerebellar and cortical atrophy is associated with a CAG repeat expansion. Neurology, 56(2001):299-303.

Holmes SE, O'Hearn E, McInnis MG, Kwak NG, Gorelick-Feldman DA, Kleiderlein JK, Callahan C, Sherr M, Sharp AH, Sumner AJ, Ashworth RG, Ananth U, Seltzer W, Vieria-Saecker AM, Epplen JT, Reiss O, Ross CA, Margolis RL. Expansion of a novel CAG trinucleotide repeat in the 5' region of PPP2R2B is associated with SCA12, Nature Genetics, 23 (1999): 391-392.

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