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Roth, Christian

Journal of Pediatric Endocrinology and Metabolism

Editor-in-Chief: Kiess, Wieland

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Glycemic control in familial vs. sporadic type 1 diabetes patients over 5 years

Sujana Reddy
  • Division of Endocrinology and Metabolism, Department of Pediatrics, Rhode Island Hospital and Hasbro Children’s Hospital/The Warren Alpert Medical School of Brown University, Providence, RI, USA
/ Steven E. Reinert
  • Information Services Department, Lifespan Corp., Providence, RI, USA
/ Geetha Gopalakrishnan
  • Division of Adult Endocrinology, Department of Internal Medicine, Rhode Island Hospital/The Warren Alpert Medical School of Brown University, Providence, RI, USA
/ Wendy Plante
  • Department of Child and Adolescent Psychiatry, Rhode Island Hospital and Hasbro Children’s Hospital/The Warren Alpert Medical School of Brown University, Providence, RI, USA
/ Charlotte M. Boney
  • Division of Endocrinology and Metabolism, Department of Pediatrics, Rhode Island Hospital and Hasbro Children’s Hospital/The Warren Alpert Medical School of Brown University, Providence, RI, USA
/ Jose Bernardo Quintos
  • Corresponding author
  • Division of Endocrinology and Metabolism, Department of Pediatrics, Rhode Island Hospital and Hasbro Children’s Hospital/The Warren Alpert Medical School of Brown University, Providence, RI, USA
  • Email:
Published Online: 2013-08-10 | DOI: https://doi.org/10.1515/jpem-2013-0037

Abstract

Background: Studies have shown that familial type 1 diabetes patients (FTID) have less severe metabolic derangement at presentation compared to sporadic patients (ST1D), but data on long-term metabolic control are lacking.

Objective/Hypothesis: (1) FT1D will have less severe presentation and better HbA1c over 5 years compared to ST1D; (2) HbA1c in the offspring will correlate with parent HbA1c in parent-offspring group; and (3) HbA1c of the second affected sibling (SP2) will correlate with the first affected sibling (SP1) in sib-pairs.

Methods: Cohort of 33 parent-offspring and 19 sib-pairs; controls included 33 sporadic subjects matched by age, sex, ethnicity, puberty, and insulin regimen. Paired t-test and Pearson’s correlation were used for statistical analysis.

Results: At diagnosis, mean age in FT1D vs. matched ST1D (7.7±4.9 vs. 7.6±4.5 years), mean HbA1c (9.6% vs. 10.7%), HCO3 (21 vs. 18 meq/L), glucose (428 vs. 463 mg/dL) and pH (7.35 vs. 7.36; p=ns) were not different. At 5 years, HbA1c (8.9% vs. 8.8%; p=0.81), clinic visits (12 vs. 12.5, p=0.68) and emergency room visits (0.48 vs. 0.24, p=0.10) were not different. In affected siblings, only HCO3 was different (SP1:18 vs. SP2: 24 meq/L; p<0.01). HbA1c for SP2 correlated positively with SP1 (r=0.67, p<0.01). Offspring HbA1c correlated positively with affected parents (9.3% vs. 8.6%, r=0.57, p=0.18) but was not significant.

Conclusion: Metabolic control at diagnosis and at 5 years was similar in FT1D and ST1D. In sib-pairs, the second affected sibling had milder clinical presentation compared to the first affected sibling.

Keywords: familial; glycemic control; parent-offspring; sporadic; type 1 diabetes mellitus

References

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    Maahs DM, West NA, Lawrence JM, Mayer-Davis EJ. Epidemiology of type 1 diabetes. Endocrinol Metab Clin North Am 2010;39:481–97.

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About the article

Corresponding author: Jose Bernardo Quintos, MD, Division of Pediatric Endocrinology, Rhode Island Hospital/The Warren Alpert Medical School of Brown University, 593 Eddy Street, MPS-2, Providence, RI 02903, USA, Phone: +1-401-444-5504, Fax: +1-401-444-2534, E-mail:


Received: 2013-01-24

Accepted: 2013-06-17

Published Online: 2013-08-10

Published in Print: 2014-01-01


Citation Information: Journal of Pediatric Endocrinology and Metabolism, ISSN (Online) 2191-0251, ISSN (Print) 0334-018X, DOI: https://doi.org/10.1515/jpem-2013-0037. Export Citation

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