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Treatment With N-Acetyl-L-Leucine Beneficial for Niemann-Pick Disease

Medically reviewed by Drugs.com.

By Elana Gotkine HealthDay Reporter

THURSDAY, Feb. 1, 2024 -- Treatment with N-acetyl-L-leucine (NALL) for 12 weeks yields better neurological status than placebo among patients with genetically confirmed Niemann-Pick disease type C, according to a study published in the Feb. 1 issue of the New England Journal of Medicine.

Tatiana Bremova-Ertl, M.D., Ph.D., from the University Hospital Bern in Switzerland, and colleagues randomly assigned 60 patients age 4 years or older with genetically confirmed Niemann-Pick disease type C to receive 12 weeks of NALL followed by 12 weeks of placebo or to receive 12 weeks of placebo followed by 12 weeks of NALL in a 1:1 ratio.

The researchers found that the mean change from baseline in the Scale for the Assessment and Rating of Ataxia total score was −1.97 ± 2.43 and −0.60 ± 2.39 points after 12 weeks of receiving NALL and placebo, respectively (least-squares mean difference, −1.28 points). For the secondary end points, the results were generally supportive of the findings in the primary analysis; however, these were not adjusted for multiple comparisons. A similar incidence of adverse events was seen with NALL and placebo; there were no treatment-related serious adverse events reported.

"In this phase 3 trial involving patients with Niemann-Pick disease type C, treatment with NALL reduced neurologic signs and symptoms as compared with placebo over 12 weeks," the authors write.

The study was funded by IntraBio.

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Disclaimer: Statistical data in medical articles provide general trends and do not pertain to individuals. Individual factors can vary greatly. Always seek personalized medical advice for individual healthcare decisions.

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Posted February 2024

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