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Mol Genet Metab Rep. 2017 May 18;12:35-40. doi: 10.1016/j.ymgmr.2017.05.006. eCollection 2017 Sep.

The factors affecting lipid profile in adult patients with Mucopolysaccharidosis.

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Adult Inherited Metabolic Disorders, The Mark Holland Metabolic Unit, Salford Royal Foundation NHS Trust, Ladywell NW2- 2nd Floor Room 112, Salford, Manchester, M6 8HD, United Kingdom.
N.I. Regional Genetics Service, Level A, Belfast City Hospital, Lisburn Rd, Belfast BT9 7AB, United Kingdom.



Mucopolysaccharidoses (MPS) are a group of rare inherited disorders characterized by abnormal accumulation of glycosaminoglycans (GAGs) within the myocytes and coronary arteries. Little is known about hyperlipidaemia as a potential cardiovascular risk factor in these patients. Baseline cholesterol data in adults are scarce. Therefore, the aim of this study was to analyse factors affecting lipid profile in different types of MPSs to determine if abnormalities in lipid profile contribute to the overall risk of cardiovascular disease.


Adult patients (above the age of 16) with MPS type I, II, III, IV and VI attending clinics in two Inherited Metabolic Disorders centres were included. Their lipid profile, lipoprotein (a), HbA1c, Glucose Tolerance Test (GTT), BMI and treatment type were extracted. Analysis included descriptive statistics and Student t-test.


Eighty two patients with five MPS types (I, II, III, IV and VI) were included in the study; 29 were females (35%) and 53 were males (65%). BMI above 25 kg/m2 in all MPS types indicated that some patients were overweight for their height. Only one patient post-HSCT had diabetes. In 3 cases insulin was analysed during GTT and showed no insulin resistance despite raised BMI. Mean total cholesterol and LDL-cholesterol were below 5 mmol/L and 3 mmol/L, respectively, in five individual MPS types. Lipoprotein (a) was available for 6 MPS IV patients and was not significantly raised.


MPS disorders are not associated with significant hypercholesterolaemia or diabetes mellitus despite increased BMI. Total cholesterol and LDL-cholesterol were within the targets for primary prevention for non-MPS population. Lipoprotein (a) is not a useful marker of cardiovascular disease in a small group of adult MPS IV patients irrespectively of treatment option. Whether long-term cardiovascular risk is dependent on lipid profile, diabetes, obesity or GAGs deposition within the organ system remains unanswered.


BMI; Cardiovascular risk; Cholesterol; Diabetes; Lipids; MPS; Mucopolysaccharidosis

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