Alazami syndrome: the first case of papillary thyroid carcinoma

Ivan Ivanovski, Stefano Giuseppe Caraffi, Elisa Magnani, Simonetta Rosato, Marzia Pollazzon, Leslie Matalonga, Simonetta Piana, Davide Nicoli, Chiara Baldo, Sergio Bernasconi, Andrea Frasoldati, Orsetta Zuffardi, Livia Garavelli

Research output: Contribution to journalArticle

Abstract

Alazami syndrome (MIM#615071) is a rare developmental disorder caused by biallelic variants in the LARP7 gene. Hallmark features include short stature, global developmental delay, and distinctive facial features. To date, 23 patients from 11 families have been reported in the literature. Here we describe a 19-year-old man who, in association with the typical features of Alazami syndrome, was diagnosed at the age of 14 years with papillary thyroid carcinoma, harboring the somatic BRAF V600E mutation. Whole exome sequencing revealed two novel LARP7 variants in compound heterozygosity, whereas only common variants were detected in genes associated with familial nonmedullary thyroid cancer (MIM#188550). LARP7 acts as a tumor suppressor in breast and gastric cancer, and possibly, according to recent studies, in thyroid tumors. Since thyroid cancer is rare among children and adolescents, we hypothesize that the LARP7 variants identified in our patient are responsible for both Alazami syndrome and tumor susceptibility. We also provide an overview of the clinical findings in all Alazami syndrome patients reported to date and discuss the possible pathogenetic mechanism that may underlie this condition, including the role of LARP7 in tumor susceptibility.

Original languageEnglish
Pages (from-to)133-141
Number of pages9
JournalJournal of Human Genetics
Volume65
Issue number2
DOIs
Publication statusPublished - Jan 1 2020

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Neoplasms
Exome
Thyroid Neoplasms
Genes
Stomach Neoplasms
Thyroid Gland
Breast Neoplasms
Mutation
Papillary Thyroid cancer

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Ivanovski, I., Caraffi, S. G., Magnani, E., Rosato, S., Pollazzon, M., Matalonga, L., ... Garavelli, L. (2020). Alazami syndrome: the first case of papillary thyroid carcinoma. Journal of Human Genetics, 65(2), 133-141. https://doi.org/10.1038/s10038-019-0682-5

Alazami syndrome : the first case of papillary thyroid carcinoma. / Ivanovski, Ivan; Caraffi, Stefano Giuseppe; Magnani, Elisa; Rosato, Simonetta; Pollazzon, Marzia; Matalonga, Leslie; Piana, Simonetta; Nicoli, Davide; Baldo, Chiara; Bernasconi, Sergio; Frasoldati, Andrea; Zuffardi, Orsetta; Garavelli, Livia.

In: Journal of Human Genetics, Vol. 65, No. 2, 01.01.2020, p. 133-141.

Research output: Contribution to journalArticle

Ivanovski, I, Caraffi, SG, Magnani, E, Rosato, S, Pollazzon, M, Matalonga, L, Piana, S, Nicoli, D, Baldo, C, Bernasconi, S, Frasoldati, A, Zuffardi, O & Garavelli, L 2020, 'Alazami syndrome: the first case of papillary thyroid carcinoma', Journal of Human Genetics, vol. 65, no. 2, pp. 133-141. https://doi.org/10.1038/s10038-019-0682-5
Ivanovski I, Caraffi SG, Magnani E, Rosato S, Pollazzon M, Matalonga L et al. Alazami syndrome: the first case of papillary thyroid carcinoma. Journal of Human Genetics. 2020 Jan 1;65(2):133-141. https://doi.org/10.1038/s10038-019-0682-5
Ivanovski, Ivan ; Caraffi, Stefano Giuseppe ; Magnani, Elisa ; Rosato, Simonetta ; Pollazzon, Marzia ; Matalonga, Leslie ; Piana, Simonetta ; Nicoli, Davide ; Baldo, Chiara ; Bernasconi, Sergio ; Frasoldati, Andrea ; Zuffardi, Orsetta ; Garavelli, Livia. / Alazami syndrome : the first case of papillary thyroid carcinoma. In: Journal of Human Genetics. 2020 ; Vol. 65, No. 2. pp. 133-141.
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