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Bioimpacts. 2022;12: 3-7.
doi: 10.34172/bi.2021.23931
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Krabbe disease: A personal perspective and hypothesis

Mohammad A. Rafi 1* ORCID logo

1 Emeritus Professor, Department of Neurology, Sidney Kimmel College of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
*Corresponding Author: Corresponding author: Mohammad A Rafi, , Email: mbrafi610@gmail.com

Abstract

Introduction: Krabbe disease (KD) or globoid cell leukodystrophy (GLD) is one of the lysosomal disorders affecting central and peripheral nervous systems (CNS and PNS). It is caused by mutations on the galactocerebrosidase (GALC) gene. Affected individuals accumulate undegraded substrates and suffer from neuroinflammation.
Methods: Hematopoietic stem cell transplantation (HSCT) has been partially successful in treating patients with KD when accomplished prior to the onset of symptoms. The success is credited to the ability of the hematopoietic stem cells in providing some GALC enzyme to the CNS and eradicating potential neuroinflammation. Combination of the HSCT with some other GALC-providing strategies has shown synergistic effects in the treatment of the mouse model of this disease.
Results: Here, the possibility of eliminating HSCT in the treatment of human patients and replacing it with a single therapy that will provide sufficient GALC enzyme to the nervous systems is suggested. Such treatment, if started during the asymptomatic stage of the disease, not only may eradicate the enzyme deficiency, but may also keep any neuroinflammation at bay.
Conclusion: Successful treatment of the KD may be possible by restoring consistent and sufficient GALC expression in CNS and PNS.
Keywords: Krabbe disease, GLD, GALC, Gene therapy, Bone marrow transplantation, BMT
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Submitted: 03 Jul 2021
Revision: 15 Aug 2021
Accepted: 18 Sep 2021
ePublished: 22 Dec 2021
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