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Bourgon N, Chen R, Grangé G, Grotto S, Molac C, Loeuillet L, Attié-Bitach T. Neu Laxova syndrome and megacystis in the first trimester: Broadening the fetal phenotype. Prenat Diagn 2023; 43:1666-1670. [PMID: 37964427 DOI: 10.1002/pd.6463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 11/16/2023]
Abstract
Neu Laxova syndrome (NLS) is a rare and lethal congenital disorder characterized by severe intra-uterine growth retardation (IUGR), ichthyosis, abnormal facial features, limb abnormalities with arthrogryposis and a wide spectrum of severe malformations of the central nervous system (CNS). NLS is due to biallelic variants in three genes previously involved in serine-deficiency disorders (PHGDH, PSAT1 and PSPH), extending the phenotypic spectrum of these disorders.
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Affiliation(s)
- Nicolas Bourgon
- Service d'Obstétrique-Maternité, Chirurgie, Médecine et Imagerie fœtales, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
- INSERM UMR-1163, Institut Imagine, Université Paris Cité, Paris, France
| | - Ruiqian Chen
- Service de Médecine Génomique des Maladies Rares, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
| | - Gilles Grangé
- Department d'Obstétrique, Maternité de Port-Royal, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, AP-HP Centre, Paris, France
| | - Sarah Grotto
- Service de Médecine Génomique des Maladies Rares, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
| | - Clémence Molac
- Service de Médecine Génomique des Maladies Rares, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
| | - Laurence Loeuillet
- Service de Médecine Génomique des Maladies Rares, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
| | - Tania Attié-Bitach
- INSERM UMR-1163, Institut Imagine, Université Paris Cité, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpitaux Universitaires Paris Centre, Hôpital Necker-Enfants Malades, AP-HP Centre, Paris, France
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Lajmi Y, Loeuillet L, Petrilli G, Egloff C, Nectoux J, Molac C, Roux N, Pannier E, Achaiaa A, Arkoub ZA, Chuon S, Coussement A, Dupont JM, Malan V, Spaggiari E, Razavi F, Amiel J, Bessières B, Grotto S, Attié-Bitach T. Two novel variations p.(Ser1275Thr) and p.(Ser1275Arg) in FLT4 causing prenatal hereditary lymphedema type 1. Birth Defects Res 2023; 115:563-571. [PMID: 36538874 DOI: 10.1002/bdr2.2141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Hereditary lymphedema 1 is a rare congenital condition, characterized by the development of chronic swelling in body parts. It is highly variable in expression and age of onset with different presentations: from feet edema to hydrops fetalis. This affection is genetically heterogeneous with autosomal dominant inheritance and incomplete penetrance due to a mutation in the FLT4 gene in most cases. CASES In our study, we report on two fetuses harboring congenital lymphedema with FLT4 variation and review the prenatal confirmed ones of the literatures. Our cases were selected within fetuses explored by exome sequencing in a diagnosis setting. Prenatal ultrasonography showed hydrops fetalis in one case and an increased nuchal translucency with hydrothorax in the other. Comparative genomic hybridization array on amniocentesis was normal in both cases. Exome sequencing identified a variation p.(Ser1275Thr) and p.(Ser1275Arg) in fetus 1 and fetus 2 in the FLT4 gene, respectively. A de novo mutation at the same codon was reported in prenatal literature suggesting possible genotype phenotype correlation. CONCLUSION Cystic hygroma/hydrops fetalis are possible manifestations of several disorders. This study illustrates how the integration of exome sequencing in prenatal clinical practice can facilitate the diagnosis and genetic counseling of heterogeneous developmental affections.
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Affiliation(s)
- Yosra Lajmi
- Department of Genomic Medicine of System and Organs Diseases, Cochin Hospital, APHP Center, University Paris Cité, Paris, France
| | - Laurence Loeuillet
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Giulia Petrilli
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Charles Egloff
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Juliette Nectoux
- Department of Genomic Medicine of System and Organs Diseases, Cochin Hospital, APHP Center, University Paris Cité, Paris, France
| | - Clémence Molac
- Clinical Genetics, Maternity Port-Royal, APHP Center, University Paris Cité, Paris, France
| | - Nathalie Roux
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Emmanuelle Pannier
- Gynecology-Obstetrics Department, Port-Royal Hospital, APHP Center, University Paris Cité, Paris, France
| | - Amale Achaiaa
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Zaina Ait Arkoub
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Sophie Chuon
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Aurélie Coussement
- Department of Genomic Medicine of System and Organs Diseases, Cochin Hospital, APHP Center, University Paris Cité, Paris, France
| | - Jean Michel Dupont
- Department of Genomic Medicine of System and Organs Diseases, Cochin Hospital, APHP Center, University Paris Cité, Paris, France
| | - Valérie Malan
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Emmanuel Spaggiari
- Gynecology-Obstetrics Department, Necker Hospital for Children Diseases, APHP Center, University Paris Cité, Paris, France
| | - Ferechte Razavi
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Jeanne Amiel
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Bettina Bessières
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Sarah Grotto
- Clinical Genetics, Maternity Port-Royal, APHP Center, University Paris Cité, Paris, France
| | - Tania Attié-Bitach
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
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Huby T, Le Guillou E, Burin des Roziers C, Pacot L, Briand-Suleau A, Chansavang A, Toussaint A, Duchossoy V, Vaucouleur N, Benoit V, Lodé L, Molac C, North MO, Grotto S, Tsatsaris V, Jouinot A, Cochand-Priollet B, Paepegaey AC, Nectoux J, Groussin L, Pasmant E. Noninvasive Prenatal Diagnosis of a Paternally Inherited MEN1 Pathogenic Splicing Variant. J Clin Endocrinol Metab 2022; 107:e1367-e1373. [PMID: 34897474 DOI: 10.1210/clinem/dgab894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disease caused by mutations in the tumor suppressor gene MEN1. The uncertainty of pathogenicity of MEN1 variants complexifies the selection of the patients likely to benefit from specific care. OBJECTIVE MEN1-mutated patients should be offered tailored tumor screening and genetic counseling. We present a patient with hyperparathyroidism for whom genetic analysis identified a variant of uncertain significance in the MEN1 gene (NM_130799.2): c.654G > T p.(Arg218=). Additional functional genetic tests were performed to classify the variant as pathogenic and allowed prenatal testing. DESIGN Targeted next generation sequencing identified a synonymous variant in the MEN1 gene in a 26-year-old male with symptomatic primary hyperparathyroidism. In silico and in vitro genetic tests were performed to assess variant pathogenicity. RESULTS Genetic testing of the proband's unaffected parents showed the variant occurred de novo. Transcript study showed a splicing defect leading to an in-frame deletion. The classification of the MEN1 variant as pathogenic confirmed the diagnosis of MEN1 and recommended an adapted medical care and follow-up. Pathogenic classification also allowed to propose a genetic counseling to the proband and his wife. Noninvasive prenatal diagnosis was performed with a personalized medicine-based protocol by detection of the paternally inherited variant in maternal plasmatic cell free DNA, using digital PCR. CONCLUSION We showed that functional genetic analysis can help to assess the pathogenicity of a MEN1 variant with crucial consequences for medical care and genetic counseling decisions.
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Affiliation(s)
- Thomas Huby
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Edouard Le Guillou
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Cyril Burin des Roziers
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Laurence Pacot
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Audrey Briand-Suleau
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Albain Chansavang
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Aurélie Toussaint
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Véronique Duchossoy
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Nicolas Vaucouleur
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Virginie Benoit
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Laurence Lodé
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Clémence Molac
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Marie-Odile North
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Sarah Grotto
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Vassilis Tsatsaris
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Anne Jouinot
- Department of Endocrinology, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Béatrix Cochand-Priollet
- Department of Pathology, Cochin Hospital, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | | | - Juliette Nectoux
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Lionel Groussin
- Department of Endocrinology, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Eric Pasmant
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
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