Afonso P Liberato1, Eric J Mallack1, Razina Aziz-Bose1, Doug Hayden1, Arne Lauer1, Paul A Caruso1, Patricia L Musolino1, Florian S Eichler2. 1. From the Department of Radiology, Division of Neuroradiology (A.P.L., P.A.C.), Department of Neurology (E.J.M., R.A.-B., A.L., P.L.M., F.S.E.), and Department of Biostatistics (D.H.), Harvard Medical School, Massachusetts General Hospital, Boston; and Department of Pediatrics, Division of Child Neurology (E.J.M.), Weill Cornell Medical College, New York-Presbyterian Hospital, New York. 2. From the Department of Radiology, Division of Neuroradiology (A.P.L., P.A.C.), Department of Neurology (E.J.M., R.A.-B., A.L., P.L.M., F.S.E.), and Department of Biostatistics (D.H.), Harvard Medical School, Massachusetts General Hospital, Boston; and Department of Pediatrics, Division of Child Neurology (E.J.M.), Weill Cornell Medical College, New York-Presbyterian Hospital, New York. feichler@partners.org.
Abstract
OBJECTIVE: To describe the brain MRI findings in asymptomatic patients with childhood cerebral adrenoleukodystrophy (CCALD). METHODS: We retrospectively reviewed a series of biochemically or genetically confirmed cases of adrenoleukodystrophy followed at our institution between 2001 and 2015. We identified and analyzed 219 brain MRIs from 47 asymptomatic boys (median age 6.0 years). Patient age, MRI scan, and brain lesion characteristics (e.g., contrast enhancement, volume, and Loes score) were recorded. The rate of lesion growth was estimated using a linear mixed effect model. RESULTS: Sixty percent of patients (28/47) showed brain lesions (median Loes score of 3.0 points; range 0.5-11). Seventy-nine percent of patients with CCALD (22/28) had contrast enhancement on first lesional or subsequent MRI. Lesion progression (Loes increase of ≥0.5 point) was seen in 50% of patients (14/28). The rate of lesion growth (mL/mo) was faster in younger patients (r = -0.745; p < 0.0001). Older patients (median age 14.4 y/o) tended to undergo spontaneous arrest of disease. Early lesions grew 46× faster when still limited to the splenium, genu of the corpus callosum, or the brainstem (p = 0.001). CONCLUSION: We provide a description of CCALD lesion development in a cohort of asymptomatic boys. Understanding the early stages of CCALD is crucial to optimize treatments for children diagnosed by newborn screening.
OBJECTIVE: To describe the brain MRI findings in asymptomatic patients with childhood cerebral adrenoleukodystrophy (CCALD). METHODS: We retrospectively reviewed a series of biochemically or genetically confirmed cases of adrenoleukodystrophy followed at our institution between 2001 and 2015. We identified and analyzed 219 brain MRIs from 47 asymptomatic boys (median age 6.0 years). Patient age, MRI scan, and brain lesion characteristics (e.g., contrast enhancement, volume, and Loes score) were recorded. The rate of lesion growth was estimated using a linear mixed effect model. RESULTS: Sixty percent of patients (28/47) showed brain lesions (median Loes score of 3.0 points; range 0.5-11). Seventy-nine percent of patients with CCALD (22/28) had contrast enhancement on first lesional or subsequent MRI. Lesion progression (Loes increase of ≥0.5 point) was seen in 50% of patients (14/28). The rate of lesion growth (mL/mo) was faster in younger patients (r = -0.745; p < 0.0001). Older patients (median age 14.4 y/o) tended to undergo spontaneous arrest of disease. Early lesions grew 46× faster when still limited to the splenium, genu of the corpus callosum, or the brainstem (p = 0.001). CONCLUSION: We provide a description of CCALD lesion development in a cohort of asymptomatic boys. Understanding the early stages of CCALD is crucial to optimize treatments for children diagnosed by newborn screening.
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