Abstract
Pearson syndrome (PS) is a very rare and often fatal multisystemic mitochondrial disorder involving the liver, kidney, pancreas, and hematopoietic and central nervous system. It is characterized principally by a transfusion-dependent anemia that usually improves over time, a tendency to develop severe infections, and a high mortality rate. We describe a group of 11 PS patients diagnosed in Italy in the period 1993–2014. The analysis of this reasonably sized cohort of patients contributes to the clinical profile of the disease and highlights a rough incidence of 1 case/million newborns. Furthermore, it seems that some biochemical parameters like increased serum alanine and urinary fumaric acid can help to address an early diagnosis.
Competing interests: None declared
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Abbreviations
- ADA:
-
Adenosine deaminase
- A.I.E.O.P.:
-
Associazione Italiana di Ematologia ed Oncologia Pediatrica
- ANC:
-
Absolute neutrophil count
- BFU:
-
Burst-forming units
- BM:
-
Bone marrow
- BMF:
-
Bone marrow failure
- CFU-E:
-
Colony forming unit-erythroid
- CFU-GM:
-
Colony forming unit-granulocyte macrophage
- CRF:
-
Case report form
- CT:
-
Computed tomography
- DBA:
-
Diamond–Blackfan anemia
- EPO:
-
Erythropoietin
- FUP:
-
Follow-up
- GCSF:
-
Granulocyte colony stimulating factor
- Hgb:
-
Hemoglobin
- IDDM:
-
Insulin-dependent diabetes mellitus
- KSS:
-
Kearns–Sayre syndrome
- LS:
-
Leigh syndrome
- MRI:
-
Magnetic resonance imaging
- mtDNA:
-
Mitochondrial DNA
- PRBC:
-
Packed red blood cells
- PS:
-
Pearson syndrome
- VWT:
-
Ventricular wall thickness
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Acknowledgments
Giuseppe Furfari is acknowledged for electronic CRF design. The Parents’ Association A.S.L.T.I – Liberi di crescere is acknowledged for supporting the activity of the Pediatric Onco-Hematology Unit of A.R.N.A.S. Ospedali Civico, Di Cristina e Benfratelli. No specific funding was received for this study.
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Communicated by: Ertan Mayatepek, MD
Appendices
Take-Home Message
PS is a severe mitochondrial disorder characterized by increased alanine and lactate serum levels and fumaric acid urinary excretion and a frequent recovery of bone marrow (BM) in the case of survival after the first 2–3 years of life.
This article does not contain any studies with human or animal subjects performed by any of the authors.
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No external funding was secured for this study.
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No authors have any financial relationships relevant to this article to disclose.
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No authors have any conflicts of interest to disclose.
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000 (5). Informed consent was obtained from all patients for being included in the study.
Contributor’s Statements
Drs. Farruggia and Di Cataldo conceptualized and designed the study and the data collection instruments. Drs. Farruggia, Pillon, and Dufour carried out the initial analyses and drafted the initial manuscript. Drs. Farruggia, Puccio, and Macaluso coordinated data collection and performed the statistical analysis. Drs. Macaluso, Palmisani, Pinto, Lo Valvo, Cantarini, Tornesello, Corti, Fioredda, Varotto, Martire, Russo, and Moroni contributed to the enrollment of patients, diagnosis, and sample collection.
All authors critically reviewed the paper, approved the final manuscript as submitted, and agreed to be accountable for all aspects of the work.
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Farruggia, P. et al. (2015). Pearson Syndrome: A Retrospective Cohort Study from the Marrow Failure Study Group of A.I.E.O.P. (Associazione Italiana Emato-Oncologia Pediatrica). In: Morava, E., Baumgartner, M., Patterson, M., Rahman, S., Zschocke, J., Peters, V. (eds) JIMD Reports, Volume 26. JIMD Reports, vol 26. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8904_2015_470
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DOI: https://doi.org/10.1007/8904_2015_470
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