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Cerasuolo A, Miele E, Russo M, Aversano A, Cammarota F, Duraturo F, Liccardo R, Izzo P, Rosa MD. Sporadic pediatric severe familial adenomatous polyposis: A case report. Mol Clin Oncol 2020; 13:20. [PMID: 32754334 DOI: 10.3892/mco.2020.2090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 06/04/2020] [Indexed: 12/31/2022] Open
Abstract
Familial adenomatous polyposis (FAP) is an autosomal dominant hereditary precancerous condition caused by germline pathogenetic variants in the tumor suppressor adenomatous polyposis coli (APC) gene. Patients with FAP develop multiple gastrointestinal adenomatous polyps usually at the age of ~20 years, which, if untreated, become cancerous in 100% of cases. Genotype-phenotype associations have been extensively described; however, inter- and intra-familial variability exists. It is crucial to characterize the causative pathogenetic variant in each pedigree in order to develop a cancer prevention program and follow-up strategy for at-risk families. The present report describes a severe case of sporadic FAP that was diagnosed when the patient was ~2 years old. The patient was a carrier of the de novo pathogenic c.4132 C>T (p.Gln1378X) variant. Additionally, the patient was a carrier of the homozygous c.5465 T>A (p.Asp1822Val) polymorphism, inherited from both parents. However, it remains unclear whether or not this polymorphism is involved in the phenotypic manifestation. This case highlights the need to extend molecular screening to very young children when they show iron-deficiency, anaemia and/or rectal bleeding, even in the absence of a familial history of disease.
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Affiliation(s)
- Andrea Cerasuolo
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS 'Fondazione G. Pascale', I-80131 Naples, Italy
| | - Erasmo Miele
- Department of Translational Medical Sciences, Section of Pediatrics, University of Naples Federico II, I-80131 Naples, Italy
| | - Marina Russo
- Department of Translational Medical Sciences, Section of Pediatrics, University of Naples Federico II, I-80131 Naples, Italy
| | - Antonietta Aversano
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy
| | - Francesca Cammarota
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy.,Ceinge Biotecnologie Avanzate, I-80131 Naples, Italy
| | - Francesca Duraturo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy.,Ceinge Biotecnologie Avanzate, I-80131 Naples, Italy
| | - Raffaella Liccardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy
| | - Paola Izzo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy.,Ceinge Biotecnologie Avanzate, I-80131 Naples, Italy
| | - Marina De Rosa
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, I-80131 Naples, Italy.,Ceinge Biotecnologie Avanzate, I-80131 Naples, Italy
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