Introduction Mucopolysaccharidosis type IV A (MPS IVA) or Morquio A syndrome is an autosomal recessive lysosomal storage disease caused by GALNS gene mutations that lead to a deficiency of the N -acetylgalactosamine-6-sulfate sulfatase enzyme and the accumulation of two glycosaminoglycans in cell lysosomes, namely, chondroitin and keratan sulfate. Objective To present two female patients with Morquio A syndrome in their late adult years (over 50 years of age) with a classical phenotype, treated with enzyme replacement therapy; and to present a summary of the natural history and the characteristics of the disease, and the benefit of comprehensive management. Materials and methods Descriptive clinical study before and after the treatment with enzyme replacement therapy as part of the comprehensive management of MPS IVA. Results Enzyme replacement therapy with elosulfase alfa was effective, with an adequate safety profile in these two patients, showing evidence of sustained improvement in terms of endurance and gait patterns. Conclusion We present two cases of MPS IVA, with longer survival than reported previously in classical phenotypes associated with this disease condition. There is a paucity of reports of similar cases in the literature. We believe that the clinical heterogeneity of the disease manifesting with the classical phenotype, together with comprehensive management, have played a role in the survival of these two patients. Therapy with elosulfase alfa as part of comprehensive management has been crucial; we suspect a clinical response and infer a better quality of life and reduced burden for the caregiver, supporting its use in older patients.
Dentro de las displasias óseas hay cuadros clínicos que hacen parte de las denominadas condrodisplasias metafisarias, conocidas también como disostosis metafisarias, las cuales presentan mínimas diferencias entre sí, lo que las hace susceptibles de ser confundidas con otros cuadros clínicos como la acondroplasia y el raquitismo. En este artículo se presenta un caso clínico de condrodisplasia metafisaria tipo Schmid de un paciente de Popayán, Colombia, al igual que algunas consideraciones sobre las principales características clínicas, radiológicas, de diagnóstico y tipo de herencia de esta enfermedad. El caso clínico corresponde a un paciente de género masculino de 23 meses de edad, en quien se inician estudios por la presencia de talla baja desproporcionada. Los resultados mostraron coxa vara, genu varo y extremidades cortas, con un fenotipo similar en la madre y el abuelo materno. Las radiografías evidencian la presencia de irregularidad con “deshilachamiento” de las metáfisis de huesos largos; además, ensanchamiento y esclerosis en las metáfisis proximales de ambos fémur. La meta final es ser confirmado por medio de pruebas genéticas. En conclusión, las condrodisplasias metafisarias, especialmente la tipo Schmid, son enfermedades caracterizadas por talla baja y hallazgos radiológicos especiales, dados principalmente por el compromiso metafisario a nivel de los huesos largos, que en conjunto con las características fenotípicas pueden conducir a la sospecha e identificación de este tipo de patología.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.