Determination of CRIM Status and Longitudinal Follow-up of Individuals With Pompe Disease

Official title

Determination of Cross-Reactive Immunological Material (CRIM) Status and Longitudinal Follow-up of Individuals With Pompe Disease

Overview

This is a longitudinal natural history study of Infantile Pompe disease. The investigators will regularly collect and review medical information regarding the diagnosis of Pompe disease, response to enzyme replacement (ERT) using alglucosidase alfa (Lumizyme/Myozyme) and response to immunosuppressive therapy in cases at risk for developing or those who have developed high and sustained antibodies to ERT. To follow the long-term outcomes, we will collect medical records including but not limited to the diagnosis, clinical parameters, assessments for clinical monitoring, and laboratory values including antibody testing results.

Detailed description

Infantile-onset Pompe disease is an inherited disorder caused by lack of or defect in the enzyme acid alpha-glucosidase (GAA). GAA enzyme deficiency causes glycogen to build up and damage cells throughout the body, especially in the heart and muscles, which is normally diagnosed within the first months of life. Current treatment for Pompe disease involves enzyme replacement therapy (ERT) using the drug alglucosidase alfa (Lumizyme/Myozyme), which provides a form of the GAA enzyme to replace the enzyme that is missing or not working properly in the patient's blood.

In this study, the investigators will learn about the patient's ability to tolerate ERT. Cross-Reactive Immunological Material (CRIM) is a measurement of natural GAA production and an important factor that affects how patients respond to ERT. Children who produce some natural GAA are classified as CRIM-positive, while children who do not produce any natural GAA are classified as CRIM-negative. Children who are CRIM-positive generally tolerate ERT well. But, children who are CRIM-negative, and some children classified as CRIM-positive, have a poor response to ERT due to complications from an immune response against the drug. Treatments are currently being developed to stop this immune response and prevent complications from ERT.

This is a longitudinal natural history study of Infantile Pompe disease. The investigators will regularly collect and review medical information regarding the diagnosis of Pompe disease, response to enzyme replacement (ERT) using alglucosidase alfa (Lumizyme/Myozyme) and response to immunosuppressive therapy in cases at risk for developing or those who have developed high and sustained antibodies to ERT.

The specific aims of this study are:

1. To correlate CRIM status determined in a blood sample or cultured skin fibroblasts with GAA gene variants that are causing your child's Pompe disease. 2. To explore the clinical treatment response and natural history of CRIM-positive and CRIM-negative Pompe disease patients with and without immune modulation. 3. To investigate the role of immune response to treatment (IgG and IgE) including immune phenotyping.

Interventions

• Other Observational
  This is a longitudinal study focused on the emerging natural history of Infantile Pompe disease, response to ERT using alglucosidase alfa (Myozyme) and response to Immune Tolerance Induction (ITI).

Primary outcome measures

• Clinical response to enzyme replacement therapy (ERT) using alglucosidase alfa (Myozyme) [Time frame: Up to 18 years]

Secondary outcome measures (1)

• Response to Immune Tolerance Induction (ITI) [Time frame: Up to 18 years]

Eligibility criteria

Inclusion criteria

• Confirmed diagnosis of infantile, atypical or juvenile onset Pompe disease
• Must provide a written informed consent

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model

Cohort

Study locations

United States · 1 center

• Duke University Medical Center — Durham

Publications

• Banugaria SG, Prater SN, Ng YK, Kobori JA, Finkel RS, Ladda RL, Chen YT, Rosenberg AS, Kishnani PS. The impact of antibodies on clinical outcomes in diseases treated with therapeutic protein: lessons learned from infantile Pompe disease. Genet Med. 2011 Aug;13(8):729-36. doi: 10.1097/GIM.0b013e3182174703. PMID 21637107
• Messinger YH, Mendelsohn NJ, Rhead W, Dimmock D, Hershkovitz E, Champion M, Jones SA, Olson R, White A, Wells C, Bali D, Case LE, Young SP, Rosenberg AS, Kishnani PS. Successful immune tolerance induction to enzyme replacement therapy in CRIM-negative infantile Pompe disease. Genet Med. 2012 Jan;14(1):135-42. doi: 10.1038/gim.2011.4. PMID 22237443
• Mendelsohn NJ, Messinger YH, Rosenberg AS, Kishnani PS. Elimination of antibodies to recombinant enzyme in Pompe's disease. N Engl J Med. 2009 Jan 8;360(2):194-5. doi: 10.1056/NEJMc0806809. No abstract available. PMID 19129538
• Berrier KL, Kazi ZB, Prater SN, Bali DS, Goldstein J, Stefanescu MC, Rehder CW, Botha EG, Ellaway C, Bhattacharya K, Tylki-Szymanska A, Karabul N, Rosenberg AS, Kishnani PS. CRIM-negative infantile Pompe disease: characterization of immune responses in patients treated with ERT monotherapy. Genet Med. 2015 Nov;17(11):912-8. doi: 10.1038/gim.2015.6. Epub 2015 Mar 5. PMID 25741864
• Banugaria SG, Prater SN, Patel TT, Dearmey SM, Milleson C, Sheets KB, Bali DS, Rehder CW, Raiman JA, Wang RA, Labarthe F, Charrow J, Harmatz P, Chakraborty P, Rosenberg AS, Kishnani PS. Algorithm for the early diagnosis and treatment of patients with cross reactive immunologic material-negative classic infantile pompe disease: a step towards improving the efficacy of ERT. PLoS One. 2013 Jun 25;8(6 PMID 23825616
• Kazi ZB, Desai AK, Troxler RB, Kronn D, Packman S, Sabbadini M, Rizzo WB, Scherer K, Abdul-Rahman O, Tanpaiboon P, Nampoothiri S, Gupta N, Feigenbaum A, Niyazov DM, Sherry L, Segel R, McVie-Wylie A, Sung C, Joseph AM, Richards S, Kishnani PS. An immune tolerance approach using transient low-dose methotrexate in the ERT-naive setting of patients treated with a therapeutic protein: experience in inf PMID 30214072
• Desai AK, Walters CK, Cope HL, Kazi ZB, DeArmey SM, Kishnani PS. Enzyme replacement therapy with alglucosidase alfa in Pompe disease: Clinical experience with rate escalation. Mol Genet Metab. 2018 Feb;123(2):92-96. doi: 10.1016/j.ymgme.2017.12.435. Epub 2017 Dec 23. PMID 29289479
• McIntosh PT, Hobson-Webb LD, Kazi ZB, Prater SN, Banugaria SG, Austin S, Wang R, Enterline DS, Frush DP, Kishnani PS. Neuroimaging findings in infantile Pompe patients treated with enzyme replacement therapy. Mol Genet Metab. 2018 Feb;123(2):85-91. doi: 10.1016/j.ymgme.2017.10.005. Epub 2017 Oct 13. PMID 29050825

Identifiers

NCT: NCT01665326 · Pro00001562

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗