1
|
Duclaux-Loras R, Bourgeois P, Lavrut PM, Charbit-Henrion F, Bonniaud-Blot P, Maudinas R, Bournez M, Faure M, Cerf-Bensussan N, Lachaux A, Peretti N, Fabre A. A novel mutation of PCSK1 responsible for PC1/3 deficiency in two siblings. Clin Res Hepatol Gastroenterol 2021; 45:101640. [PMID: 33662777 DOI: 10.1016/j.clinre.2021.101640] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 10/09/2020] [Accepted: 01/15/2021] [Indexed: 02/04/2023]
Abstract
Proprotein convertase 1 (PCSK1, PC1/3) deficiency is an uncommon cause of neonatal malabsorptive diarrhoea associated with endocrinopathies that are due to the disrupted processing of a large number of prohormones, including proinsulin. To date, only 26 cases have been reported. Herein, we describe two siblings with typical features including severe congenital diarrhoea, central diabetes insipidus, growth hormone deficiency, and hypoadrenalism. Next generation sequencing found a homozygous missense mutation in exon 5 of PCSK1 gene, c.500A>C (p.Asp167Ala), located within the catalytic domain. Both patients presented a high level of proinsulin. In the first years of life they required parenteral nutrition and hormone replacement therapy. The patients, aged 3 and 1.5 years, experienced several infectious episodes associated with septic shocks. While the mechanism underlying intestinal failure remains poorly investigated, parenteral nutrition is essential in order to ensure normal growth in early childhood.
Collapse
Affiliation(s)
- Rémi Duclaux-Loras
- Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Service de Gastroentérologie, Hépathologie et Nutrition Pédiatrique, Bron, France; INSERM U1111, Centre International de Recherche en Infectiologie, Lyon, France.
| | - Patrice Bourgeois
- Aix Marseille Univ, Inserm, MMG, U1251, Marseille Medical Genetics, 13385 Marseille, France
| | - Pierre-Marie Lavrut
- Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Service d'Anatomopathologie, Bron, France
| | - Fabienne Charbit-Henrion
- Service de Génétique Moléculaire, Necker-Enfants Malades Hospital, Assistance Publique des Hôpitaux de Paris, Université de Paris et Institut Imagine, Inserm UMR1163 Intestinal Immunity, Paris, France
| | | | | | | | - Mathias Faure
- INSERM U1111, Centre International de Recherche en Infectiologie, Lyon, France
| | - Nadine Cerf-Bensussan
- Université de Paris et Institut Imagine, Inserm UMR1163 Intestinal Immunity, Paris, France
| | - Alain Lachaux
- Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Service de Gastroentérologie, Hépathologie et Nutrition Pédiatrique, Bron, France
| | - Noel Peretti
- Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Service de Gastroentérologie, Hépathologie et Nutrition Pédiatrique, Bron, France
| | - Alexandre Fabre
- Service de Pédiatrie Multidisciplinaire, Hôpital de la Timone Enfants, APHM, 13385 Marseille, France
| |
Collapse
|