Homozygous familial hypercholesterolemia (HoFH), a rare inherited disorder caused by bi-allelic mutations in the LDL Receptor pathway, is characterized by extremely elevated levels of low-density lipoprotein cholesterol (LDL-C) from birth and premature atherosclerotic cardiovascular disease (ASCVD). Our current knowledge about HoFH is disjointed and largely stems from relatively small case series and expert opinion. HICC (Homozygous FH International Clinical Collaborators) is a global consortium of clinicians who are contributing de-identified data of patients diagnosed with HoFH with the goal to advance our understanding of this rare disease.
The HICC registry is an observational, multicenter, international registry collecting de-identified clinical and genetic information from patients with homozygous Familial Hypercholesterolemia (HoFH) worldwide. Patients are eligible to be enrolled in the registry based on the diagnosis of HoFH by the treating clinician, irrespective of how the diagnosis was made. To generate up-to-date data reflecting current rather than historic practice, patients who died or were lost to follow-up prior to 2010 are excluded. Anonymized data on demographics, type of HoFH diagnosis (clinical and/or based on the results of a genetic test), genetic results, (cardiovascular) medical history, relevant family history, physical examination, laboratory measurements, lipid lowering treatment and cardiovascular imaging are collected for 3 different time points: at diagnosis, at enrolment and at time of best lipid profile (if this is different from time at enrolment). Data are collected using pre-definite electronic case report forms to ensure uniformity of data collected. Primary analysis will be cross-sectional (e.g. based on country of residence, age, etc)
Study Type
OBSERVATIONAL
Enrollment
1,000
Differences in diagnosis, genotype, lipid profile treatment allocation among HoFH patients worldwide.
University of Pennsylvania
Philadelphia, Pennsylvania, United States
RECRUITINGDepartment of Vascular Medicine, Amsterdam UMC
Amsterdam, Netherlands
RECRUITINGDepartment of Medicine, Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town
Cape Town, South Africa
RECRUITINGc. Carbohydrate and Lipid Metabolism Research Unit, Faculty of Health Sciences, University of Witwatersrand
Johannesburg, South Africa
RECRUITINGNumber of participants entered into the database
Number of study participants with homozygous familial hypercholesterolemia
Time frame: Through study completion, an average of 8 years
Untreated and treated LDL-C levels across world income regions
Number of treated versus number of untreated subjects with relevant LDL-C levels
Time frame: Through study completion, an average of 8 years
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