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SAMJ: South African Medical Journal

On-line version ISSN 2078-5135
Print version ISSN 0256-9574

Abstract

SEVITZ, H et al. Baseline characteristics of 32 patients with Gaucher disease who were treated with imiglucerase: South African data from the International Collaborative Gaucher Group (ICGG) Gaucher Registry. SAMJ, S. Afr. med. j. [online]. 2022, vol.112, n.1, pp.21-26. ISSN 2078-5135.  http://dx.doi.org/10.7196/SAMJ.2022.v112i1.16027.

BACKGROUND. Gaucher disease (GD) is a rare inherited autosomal recessive metabolic disorder with a prevalence in the general population of ~1 per 100 000. To optimise the recognition, diagnosis and management of patients with GD in South Africa (SA), it is important to have an understanding of local patterns of presentation of the disease. OBJECTIVES. To describe the baseline pretreatment characteristics of the SA cohort of patients enrolled into the International Collaborative Gaucher Group (ICGG) Gaucher Registry whowere treated with imiglucerase (Cerezyme; Sanofi Genzyme). METHODS. The ICGG Gaucher Registry is an observational, longitudinal, international database that tracks the clinical, demographic, genetic, biochemical and therapeutic characteristics of patients with GD globally, irrespective of disease severity, treatment status or treatment choice. The study population included all SA patients reported in the ICGG Gaucher Registry as of 1 May 2020. RESULTS. The registry included 49 SA GD patients, of whom 32 received imiglucerase as first primary GD therapy. All the patients had GD type 1, 59.4% were female, and mean and median ages at diagnosis were 14.7 and 9.8 years, respectively. The most common genotype was N370S/N370S (37.5%). At treatment initiation, 30.0% of patients had been splenectomised. Among patients for whom data were available, anaemia was present in one-third of non-splenectomised patients and 12.5% of those with splenectomy, and moderate or severe thrombocytopenia was reported in two-thirds of non-splenectomised patients. Bone pain was present in 30.8% and 57.1% of non-splenectomised and splenectomised patients, respectively. No bone crises were reported, and data relating to other bone complications were available for only <3 patients. CONCLUSIONS. Haematological findings and bone pain in this group are similar to those in the global ICGG Gaucher Registry cohort. Lack of baseline data for other bone complications limits interpretation in that regard. Clinicians who treat patients with GD are encouraged to submit accurate, complete and up-to-date information so that comprehensive data for the subset of SA GD patients can be maintained to improve recognition and diagnosis, and guide appropriate and effective use of treatment for SA patients.

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