Clinical and Basic Investigations Into Congenital Disorders of Glycosylation
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ClinicalTrials.gov Identifier: NCT04199000 |
Recruitment Status :
Recruiting
First Posted : December 13, 2019
Last Update Posted : May 9, 2023
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Condition or disease |
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Congenital Disorders of Glycosylation |
The investigators are conducting a natural history study of patients with congenital disorders of glycosylation (CDG). The study will look into the progression of the disease amongst the participants and also look at the clinical symptoms and how they vary amongst different diseased population groups. The participants will be asked to fill out questionnaires either on their own or with a provider that will grade the severity of disease and document symptoms and diet. Participants will have an opportunity to submit blood, urine, and stool samples that will be tested for biomarkers for CDG.
Participants will also complete dietary food records, physical exams, CDG scores, and the PROMIS questionnaires to assess disease progression and severity.
Study Type : | Observational |
Estimated Enrollment : | 150 participants |
Observational Model: | Case-Only |
Time Perspective: | Other |
Official Title: | Clinical and Basic Investigations Into Congenital Disorders of Glycosylation |
Actual Study Start Date : | October 8, 2019 |
Estimated Primary Completion Date : | October 2024 |
Estimated Study Completion Date : | October 2024 |

- Indicators of Disease Severity and Progression - organ system involvement [ Time Frame: Length of study, up to 5 years ]Establish the prevalence and severity of specific morbid indicators of disease severity through use of the Nijmegen Progression CDG rating scale.
- Indicators of Disease Severity and Progression - degree of cognitive disability [ Time Frame: Length of study, up to 5 years ]Establish the prevalence and severity of specific morbid indicators of disease severity through use of the Nijmegen Progression CDG rating scale.
- Indicators of Disease Severity and Progression - case-fatality [ Time Frame: Length of study, up to 5 years ]Establish the prevalence and severity of specific morbid indicators of disease severity through use of the Nijmegen Progression CDG rating scale.
Biospecimen Retention: Samples With DNA

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Ages Eligible for Study: | Child, Adult, Older Adult |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Patients diagnosed with congenital disorders of glycosylation based on genetic confirmatory testing
Exclusion Criteria:
- Patients without congenital disorders of glycosylation

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04199000
Contact: Eva Morava-Kozicz, PhD, MD | 507-266-2967 | morava-kozicz.eva@mayo.edu | |
Contact: Alexandra Miller | 507-284-5467 | miller.alexandra@mayo.edu |
United States, Colorado | |
Children's Hospital of Colorado | Not yet recruiting |
Aurora, Colorado, United States, 80045 | |
Contact: Austin Larson, MD 303-724-3632 Austin.Larson@childrenscolorado.org | |
Contact: Bridget Flanders, BA 720-777-4309 Bridget.Flanders@childrenscolorado.org | |
Principal Investigator: Austin Larson, MD | |
United States, Louisiana | |
Tulane University Medical School | Recruiting |
New Orleans, Louisiana, United States, 70112 | |
Contact: Hans Anderrson, MD 504-988-5101 handers@tulane.edu | |
Principal Investigator: Hans Anderrson, MD | |
United States, Massachusetts | |
Boston Children's Hospital | Recruiting |
Boston, Massachusetts, United States, 02115 | |
Contact: Gerard Berry, MD 617-355-6394 Gerard.Berry@childrens.harvard.edu | |
Contact: Danielle Terek 617-355-7346 Danielle.Terek@childrens.harvard.edu | |
Principal Investigator: Gerard Berry, MD | |
United States, Minnesota | |
University of Minnesota | Recruiting |
Minneapolis, Minnesota, United States, 55454 | |
Contact: Kyriakie Sarafoglou, MD 612-624-5409 saraf010@umn.edu | |
Contact: Paige Hill 612-624-8672 hillx615@umn.edu | |
Principal Investigator: Kyriakie Sarfoglou, MD | |
Mayo Clinic in Rochester | Recruiting |
Rochester, Minnesota, United States, 55905 | |
Contact: Eva Morava-Kozicz, MD, PhD 507-266-2967 Morava-Kozicz.Eva@mayo.edu | |
Contact: Alexandra Miller, B.S. 507-293-1139 miller.alexandra@mayo.edu | |
Principal Investigator: Eva Morava-Kozicz, MD, PhD | |
United States, Pennsylvania | |
Children's Hospital of Philadelphia | Recruiting |
Philadelphia, Pennsylvania, United States, 19146 | |
Contact: Andrew Edmondson, MD 215-590-3376 EdmondsonA@email.chop.edu | |
Contact: Elizabeth McCormick, MS, LCGC 267-426-4961 McCormickE@email.chop.edu | |
Principal Investigator: Andrew Edmondson, MD | |
Principal Investigator: Miao He, PhD | |
University of Pittsburgh | Recruiting |
Pittsburgh, Pennsylvania, United States, 15224 | |
Contact: Evgenia Sklirou, MD, FACMG 412-692-5070 SklirouE@chp.edu | |
Contact: Angela Leshinski, MBA, RD, LDN 412-692-5232 angela.leshinski@chp.edu | |
Principal Investigator: Gerard Vockley, MD, PhD | |
Sub-Investigator: Evgenia Sklirou, MD, FACMG | |
United States, Texas | |
Baylor College of Medicine | Recruiting |
Houston, Texas, United States, 77030 | |
Contact: Fernando Scaglia, MD, FACMG 832-822-4280 fscaglia@bcm.edu | |
Contact: May Ali 832-822-1630 maali@bcm.edu | |
Principal Investigator: Fernando Scaglia, MD, FACMG | |
United States, Washington | |
Seattle Children's Hospital | Recruiting |
Seattle, Washington, United States, 98105 | |
Contact: Christina Lam, MD 206-987-3012 Christina.Lam@seattlechildrens.org | |
Contact: Hayden Vruegdenhil 206-884-1264 Hayden.Vruegndenhil@seattlechildrens.org | |
Principal Investigator: Christina Lam, MD |
Principal Investigator: | Eva Morava-Kozicz, MD, PhD | Mayo Clinic |
Documents provided by Eva Morava-Kozicz, Mayo Clinic:
Responsible Party: | Eva Morava-Kozicz, Principal Investigator, Mayo Clinic |
ClinicalTrials.gov Identifier: | NCT04199000 |
Other Study ID Numbers: |
19-005187 U54NS115198-01 ( U.S. NIH Grant/Contract ) |
First Posted: | December 13, 2019 Key Record Dates |
Last Update Posted: | May 9, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | De-identified data and samples may be shared with other investigators at the discretion of the PI. Only participants who have consented to sharing data/samples will be included in this portion. |
Supporting Materials: |
Study Protocol Informed Consent Form (ICF) |
Time Frame: | Length of study and beyond |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
CDG CDDG Congenital Disorders of Glycosylation Congenital Disorders of Deglycosylation ALG1 ALG3 ALG6 ALG12 ALG13 COG6 DPAGT1 DPM1 EDEM3 MAN1B1 MPDU1 |
MPI NGLY1 PGAP3 PGM1 PIGA PIGG PIGN PIGS PIGT PMM2 SLC35A2 SLC35C1 SLC39A8 SRD5A3 SSR4 |
Congenital Disorders of Glycosylation Disease Pathologic Processes Carbohydrate Metabolism, Inborn Errors |
Metabolism, Inborn Errors Genetic Diseases, Inborn Metabolic Diseases |