Bone marrow transplantationJournal Article
14 Oct 2024
Hematopoietic stem cell transplantation in children with mucopolysaccharidosis IVA: single center experience.
Abstract
Mucopolysaccharidosis IVA (MPS IVA; Morquio syndrome) is a lysosomal storage disorder and features systemic skeletal dysplasia that is caused by defective Nacetylgalactosamine-6-sulfate sulfatase (GALNS).
Although there are convincing data for hematopoietic stem cell transplantation (HSCT) in certain types of MPS, the studies are limited for MPS IVA and more data is still pending to show the efficacy/safety of HSCT.
This study included 3 girls and 7 boys, with a median age of 75,5 months (35-186 months), who underwent allogeneic HSCT for severe MPS IVA between February 12, 2021, and March 10, 2023.
Enzyme levels, height growth, the most involved organs (ear, eye, and heart), and the activities of daily living (ADL) scoring system were monitored to assess the benefit of HSCT. In a median follow-up of 20 months (9-34 months), there is no severe transplant-related adverse event was observed.
In all cases, normal enzyme levels were reached after HSCT. During the short follow-up period, our cases showed an increase in stature and improvement in daily activity functions. Here we present the data of our HSCT experience in MPS IVA with promising results regarding both safety and efficacy.
Although there are signs of amelioration with HSCT, we need more data and long-term follow-up to comment properly on the benefits of HSCT in MPS IVA.
References:
- Fratantoni JC, Hall CW, Neufeld EF. Hurler and Hunter syndromes: mutual correction of the defect in cultured fibroblasts. Science. 1968;162:570–2.
- Taylor M, Khan S, Stapleton M, Wang J, Chen J, Wynn R, et al. Hematopoietic stem cell transplantation for mucopolysaccharidoses: past, present, and future. Biol Blood Marrow Transplant: J Am Soc Blood Marrow Transplant 2019;25:e226–e46.
- Chinen Y, Higa T, Tomatsu S, Suzuki Y, Orii T, Hyakuna N. Long-term therapeutic efficacy of allogenic bone marrow transplantation in a patient with mucopolysaccharidosis IVA. Mol Genet Metab Rep. 2014;1:31–41.
- Yabe H, Tanaka A, Chinen Y, Kato S, Sawamoto K, Yasuda E, et al. Hematopoietic stem cell transplantation for Morquio A syndrome. Mol Genet Metab. 2016;117:84–94.
- Wang J, Luan Z, Jiang H, Fang J, Qin M, Lee V, et al. Allogeneic hematopoietic stem cell transplantation in thirty-four pediatric cases of mucopolysaccharidosis-a ten-year report from the china children transplant group. Biol Blood Marrow Transpl. 2016;22:2104–8.
Share: