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Duplex high resolution melting analysis (dHRMA) to detect two hot spot CYP24A1 pathogenic variants (PVs) associated to idiopathic infantile hypercalcemia (IIH). Mol Biol Rep 2021; 48:3303-3311. [PMID: 33864587 PMCID: PMC8172411 DOI: 10.1007/s11033-021-06324-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 03/27/2021] [Indexed: 11/06/2022]
Abstract
Pathogenic variants (PVs) in CYP24A1 gene are associated with Idiopathic Infantile Hypercalcemia disease (IIH). The identification of CYP24A1 PVs can be a useful tool for the improvement of target therapeutic strategies. Aim of this study is to set up a rapid and inexpensive High Resolution Melting Analysis (HRMA)-based method for the simultaneous genotyping of two hot spot PVs in CYP24A1 gene, involved in IIH. A duplex-HRMA (dHRMA) was designed in order to detect simultaneously CYP24A1 c.428_430delAAG, p.(Glu143del) (rs777676129) and c.1186C > T, p.(Arg396Trp) (rs114368325), in peculiar cases addressed to our Laboratory. dHRMA was able to identify clearly and simultaneously both hot spot CYP24A1 PVs evaluating melting curve shape and melting temperature (Tm). This is the first dHRMA approach to rapidly screen the two most frequent CYP24A1 PVs in peculiar case, providing useful information for diagnosis and patient management in IIH disease.
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Mazzuccato G, De Bonis M, Carboni V, Marchetti C, Urbani A, Scambia G, Capoluongo E, Fagotti A, Minucci A. High resolution melting profiles (HRMPs) obtained by magnetic induction cycler (MIC) have been used to monitor the BRCA2 status highlighted by next generation tumor sequencing (NGTS): a combined approach in a diagnostic environment. Mol Biol Rep 2020; 47:4897-4903. [PMID: 32468256 DOI: 10.1007/s11033-020-05504-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/06/2020] [Indexed: 11/25/2022]
Abstract
Resistance can be the result of secondary tissue variants (STVs), which restore the open reading frame of the germline BRCA allele, producing functional BRCA protein in germline BRCA1/2 (BRCA) pathogenic variant (PV) carriers, treated with platinum-based chemotherapy or poly-(ADP-ribose) polymerase inhibitors (PARP-1). We reported recently a BRCA2 mutant high grade serous ovarian cancer (HGSOC) patient with acquired resistance to the PARP-1 olaparib due to a STV detected by next generation tumor sequencing (NGTS). The aim of this study was to evaluate the versatility of the high-resolution melting analysis (HRMA) obtained by magnetic induction cycler (MIC) to monitor the BRCA2 status in formalin-fixed paraffin-embedded (FFPE) tissue samples of this patient and to compare the results obtained by NGTS. HRMA highlighted the BRCA2 STV previously detected in the IIIrd HGSOC recurrence following the tissue BRCA2 tissue status comparing the high resolution melting profiles (HRMPs). HRMPs differentiate not only BRCA2 alleles, but also their different allele abundance. We underline that (1) the MIC uses a latest generation technology guaranteeing temperature uniformity and maintenance in each well allowing high and accurate performance to obtain reported results and (2) the HRMA maintains a high sensitivity and specificity when it is performed on FFPE samples. Finally, this study represents an additional use of the HRMA, confirming its extreme versatility in the diagnostic environment.
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Affiliation(s)
- Giorgia Mazzuccato
- Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Maria De Bonis
- Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Vittoria Carboni
- Division of Oncological Gynecology, Department of Women's and Children's Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Claudia Marchetti
- Division of Oncological Gynecology, Department of Women's and Children's Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of the Sacred Heart, Rome, Italy
| | - Andrea Urbani
- Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
- Catholic University of the Sacred Heart, Rome, Italy.
| | - Giovanni Scambia
- Division of Oncological Gynecology, Department of Women's and Children's Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of the Sacred Heart, Rome, Italy
| | - Ettore Capoluongo
- Università Federico II-CEINGE, Biotecnologie Avanzate, Naples, Italy
| | - Anna Fagotti
- Division of Oncological Gynecology, Department of Women's and Children's Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Catholic University of the Sacred Heart, Rome, Italy
| | - Angelo Minucci
- Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
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De Bonis M, De Paolis E, Scaglione GL, Fania L, Lavieri MM, Mazzanti C, Di Zenzo G, Minucci A, Capoluongo E. High-resolution melting analysis to screen the ST18 gene functional risk variant for pemphigus vulgaris: The occasion to open a debate on its usefulness in clinical setting. Exp Mol Pathol 2019; 108:57-63. [PMID: 30926339 DOI: 10.1016/j.yexmp.2019.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 01/09/2023]
Abstract
The ST18 -497-65050 T > C polymorphisms (rs17315309) exhibit a very strong association in the pathogenesis of Pemphigus Vulgaris (PV) and could represent a new potential molecular target for the treatment of disease. The present study aimed to establish a low-cost, sensitive and reliable assay using high-resolution melting curve analysis (HRMA) on magnetic induction rotor-based platform, the Magnetic Induction Cycler (MIC) (Bio molecular Systems). HRMA assay was able to identify easily and unambiguously the c.-497-65050 T > C genotypes evaluating melting curve shape and melting temperature (Tm). The results of HRMA were validated by direct DNA sequencing. The HRMA is rapid, sensitive, low-cost and high-throughput assay to screen the rs17315309 variant and could be used in clinical diagnostic laboratories.
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Affiliation(s)
- Maria De Bonis
- UOC Laboratory Medicine, Genetics and Toxicology, IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy; Polo Scienze per Immagini, di Laboratorio e Infettivologiche, "Fondazione Policlinico Agostino Gemelli" - IRCCS, Rome, Italy.
| | - Elisa De Paolis
- UOC Laboratory Medicine, Genetics and Toxicology, IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy; Polo Scienze per Immagini, di Laboratorio e Infettivologiche, "Fondazione Policlinico Agostino Gemelli" - IRCCS, Rome, Italy
| | - Giovanni Luca Scaglione
- UOC Laboratory Medicine, Genetics and Toxicology, IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy
| | - Luca Fania
- Department of Dermatology - IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy
| | | | - Cinzia Mazzanti
- Department of Dermatology - IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy
| | - Giovanni Di Zenzo
- Molecular and Cell Biology Laboratory IDI-IRCCS, FLMM, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy
| | - Angelo Minucci
- Polo Scienze per Immagini, di Laboratorio e Infettivologiche, "Fondazione Policlinico Agostino Gemelli" - IRCCS, Rome, Italy
| | - Ettore Capoluongo
- UOC Laboratory Medicine, Genetics and Toxicology, IDI IRCCS, Fondazione Luigi Maria Monti, Via Monti di Creta 104, Rome, Italy; Polo Scienze per Immagini, di Laboratorio e Infettivologiche, "Fondazione Policlinico Agostino Gemelli" - IRCCS, Rome, Italy.
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Capillary electrophoresis as alternative method to detect tumor genetic mutations: the model built on the founder BRCA1 c.4964_4982del19 variant. Fam Cancer 2018; 18:29-35. [DOI: 10.1007/s10689-018-0094-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Costella A, De Leo R, Guarino D, D'Indinosante M, Concolino P, Mazzuccato G, Urbani A, Scambia G, Capoluongo E, Fagotti A, Minucci A. High-resolution melting analysis coupled with next-generation sequencing as a simple tool for the identification of a novel somatic BRCA2 variant: a case report. Hum Genome Var 2018; 5:10. [PMID: 29899995 PMCID: PMC5993729 DOI: 10.1038/s41439-018-0006-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/13/2018] [Accepted: 03/30/2018] [Indexed: 12/16/2022] Open
Abstract
In a 72-year-old woman with no associated personal or family history of breast and/or ovarian cancers, we identified a novel somatic pathogenic BRCA2 variant (c.18_28delAGAGAGGCCAA, p.Lys6Asnfs*4) using next-generation sequencing (NGS). The variant allele frequency (VAF) was 16%, and Sanger sequencing was unable to identify this variant. Adopting a high-resolution melting analysis strategy coupled with NGS, we successfully highlighted the presence of the c.18_28delAGAGAGGCCAA allele.
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Affiliation(s)
| | - Rossella De Leo
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Rome, Italy
| | | | - Marco D'Indinosante
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Rome, Italy
| | - Paola Concolino
- 1Area Diagnostica di Laboratorio IRCCS, Rome, Italy.,Institute of Biochemistry and Clinical Biochemistry, Teaching and Research Hospital "Agostino Gemelli" Foundation, Rome, Italy
| | | | - Andrea Urbani
- 1Area Diagnostica di Laboratorio IRCCS, Rome, Italy.,Institute of Biochemistry and Clinical Biochemistry, Teaching and Research Hospital "Agostino Gemelli" Foundation, Rome, Italy.,4Proteomics and Metabolomics Unit, IRCCS-Santa Lucia Foundation, Rome, Italy
| | - Giovanni Scambia
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Rome, Italy
| | - Ettore Capoluongo
- Institute of Biochemistry and Clinical Biochemistry, Teaching and Research Hospital "Agostino Gemelli" Foundation, Rome, Italy.,5Laboratory of Clinical Pathology and Advanced Molecular Diagnostics, Istituto Dermopatico dell'Immacolata -IRCCS, Rome, Italy
| | - Anna Fagotti
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Rome, Italy
| | - Angelo Minucci
- 1Area Diagnostica di Laboratorio IRCCS, Rome, Italy.,Institute of Biochemistry and Clinical Biochemistry, Teaching and Research Hospital "Agostino Gemelli" Foundation, Rome, Italy
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Genetics of breast cancer in African populations: a literature review. GLOBAL HEALTH EPIDEMIOLOGY AND GENOMICS 2018; 3:e8. [PMID: 30263132 PMCID: PMC6152487 DOI: 10.1017/gheg.2018.8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 12/25/2022]
Abstract
Breast cancer (BC) is one of the most complex, diverse and leading cause of death in women worldwide. The present investigation aims to explore genes panel associated with BC in different African regions, and compare them to those studied worldwide. We extracted relevant information from 43 studies performed in Africa using the following criteria: case-control study, association between genetic variations and BC risk. Data were provided on mutations and polymorphisms associated with BC without fixing a specific date. Case-only studies and clinical trials were excluded. Our study revealed that the majority of African BC genetic studies remain restricted to the investigation of BRCA1 and BRCA2 genes and differences in their mutations spectrum. Therefore, it is necessary to encourage African researchers to characterize more genes involved in BC using methods generating global information such as next-generation sequencing in order to guide specific and more effective therapeutic strategies for the African community.
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De Paolis E, Minucci A, De Bonis M, Scaglione GL, Gervasoni J, Primiano A, Ferraro PM, Cappellani D, Marcocci C, Gambaro G, Capoluongo E. A rapid screening of a recurrent CYP24A1 pathogenic variant opens the way to molecular testing for Idiopathic Infantile Hypercalcemia (IIH). Clin Chim Acta 2018; 482:8-13. [PMID: 29574006 DOI: 10.1016/j.cca.2018.03.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 03/09/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Loss-of-function mutations in cytochrome P450 family 24 subfamily A member 1 (CYP24A1) gene are associated with Idiopathic Infantile Hypercalcemia (IIH) and adult kidney stone disease. The enzyme deficiency leads to an impaired vitamin D catabolism pathway, resulting in a syndrome characterized by recurrent hypercalcemia, hypercalciuria and suppressed parathyroid hormone (PTH) levels. In these patients, the genetic evaluation of CYP24A1 is an important diagnostic tool, allowing the definitive diagnosis of IIH. METHODS A rapid CYP24A1 gene testing based on High Resolution Melting Analysis (HRMA) was designed in order to detect the CYP24A1 c.428_430delAAG (p.Glu143del), a recurrent IIH-associated variant. RESULTS HRMA method was able to identify c.428_430delAAG genotypes evaluating melting curve shape and melting temperature (Tm). Heterozygous samples exhibited a typical melting profile while homozygous samples showed a specific Tm shift. CONCLUSIONS We provide evidence about application of HRMA in unambiguous genotyping of the CYP24A1 c.428_430delAAG variant, making this method useful in clinical molecular diagnostics. This approach opens the way to a helpful molecular analysis of CYP24A1 gene in IIH diagnosis, to an improved pharmacological treatment strategy and to a reduced risk of recurrent stones and worsening nephrocalcinosis.
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Affiliation(s)
- Elisa De Paolis
- Polo Scienze delle Immagini, di Laboratorio ed Infettivologiche, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Angelo Minucci
- Polo Scienze delle Immagini, di Laboratorio ed Infettivologiche, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Maria De Bonis
- Polo Scienze delle Immagini, di Laboratorio ed Infettivologiche, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Giovanni Luca Scaglione
- Laboratory of Molecular Oncology, "Giovanni Paolo II" Foundation, Catholic University of Sacred Heart, Campobasso, Italy
| | - Jacopo Gervasoni
- Polo Scienze delle Immagini, di Laboratorio ed Infettivologiche, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Aniello Primiano
- Polo Scienze delle Immagini, di Laboratorio ed Infettivologiche, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Pietro Manuel Ferraro
- Polo di Scienze Reumatologiche, Dermatologiche, Immuno-Allergologiche, Urologiche e Nefrologiche, Istituto di Medicina Interna e Geriatria. Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Daniele Cappellani
- Department of Clinical and Experimental Medicine, Section of Endocrinology, University of Pisa, Pisa, Italy
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine, Section of Endocrinology, University of Pisa, Pisa, Italy
| | - Giovanni Gambaro
- Polo di Scienze Reumatologiche, Dermatologiche, Immuno-Allergologiche, Urologiche e Nefrologiche, Istituto di Medicina Interna e Geriatria. Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy
| | - Ettore Capoluongo
- Laboratory of Clinical Pathology and Advanced Molecular Diagnostics, Istituto Dermopatico dell'Immacolata -IRCCS, Rome, Italy; Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Roma, Italy.
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Identification of twenty-nine novel germline unclassified variants of BRCA1 and BRCA2 genes in 1400 Italian individuals. Breast 2017; 36:74-78. [PMID: 29020660 DOI: 10.1016/j.breast.2017.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/27/2017] [Accepted: 09/28/2017] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES Breast and/or ovarian cancers are complex multifactorial diseases caused by interaction of both genetic and non-genetic factors and characterized by predisposition to inheritance. BRCA1 and BRCA2 genes are the most clinically involved with these kinds of cancer and the spectrum of variants affecting these genes is very wide. In fact, point variants, large or small insertions/deletions, genomic rearrangements can be found in these patients, although a large number of variants with uncertain biological and clinical significance continues to be identified. Next-generation sequencing (NGS) technology is actually the most powerful tool for the discovering of causative mutations and novel disease genes, moreover it allows to make a rapid diagnosis of genetic variants giving fast, inexpensive and detailed genetic information. MATERIAL AND METHODS In this study, we report the screening of BRCA1 and BRCA2 genes on 1400 consecutive Caucasian patients with breast and/or ovarian cancer history or family risk, attending the oncogenetic ambulatory at the Foundation Policlinico Agostino Gemelli in Rome. RESULTS We describe twenty-nine novel BRCA1 and BRCA2 variants detected in Italian individuals suffering from hereditary breast and ovarian cancer syndrome (HBOC). CONCLUSION Data regarding novel variants can provide useful information not only at epidemiological but also at clinical level, allowing for the better managing of breast and ovarian cancer patients and their family members.
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