Article
Immunology
Geraldine Blanchard-Rohner, Anna Peirolo, Ludivine Coulon, Christian Korff, Judit Horvath, Pierre R. Burkhard, Fabienne Gumy-Pause, Emmanuelle Ranza, Peter Jandus, Harpreet Dibra, Alexander Malcolm R. Taylor, Joel Fluss
Summary: Ataxia-telangiectasia (A-T) is a neurodegenerative and primary immunodeficiency disorder characterized by various symptoms. This study presents a case series highlighting the phenotypic variability of A-T and emphasizes the importance of early diagnosis of variant A-T and classical A-T.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Immunology
Emilia Cirillo, Agata Polizzi, Annarosa Soresina, Rosaria Prencipe, Giuliana Giardino, Caterina Cancrini, Andrea Finocchi, Beatrice Rivalta, Rosa M. Dellepiane, Lucia A. Baselli, Davide Montin, Antonino Trizzino, Rita Consolini, Chiara Azzari, Silvia Ricci, Lorenzo Lodi, Isabella Quinti, Cinzia Milito, Lucia Leonardi, Marzia Duse, Maria Carrabba, Giovanna Fabio, Patrizia Bertolini, Paola Coccia, Irene D'Alba, Andrea Pession, Francesca Conti, Marco Zecca, Claudio Lunardi, Manuela Lo Bianco, Santiago Presti, Laura Sciuto, Roberto Micheli, Dario Bruzzese, Vassilios Lougaris, Raffaele Badolato, Alessandro Plebani, Luciana Chessa, Claudio Pignata
Summary: This study investigated the disease characteristics and genotype-phenotype correlation in an Italian cohort of AT patients and found that lymphopenia and specific genotypes are associated with poorer clinical outcomes.
JOURNAL OF CLINICAL IMMUNOLOGY
(2022)
Article
Immunology
Stefan Zielen, Ruth Pia Duecker, Sandra Woelke, Helena Donath, Sharhzad Bakhtiar, Aileen Buecker, Hermann Kreyenberg, Sabine Huenecke, Peter Bader, Nizar Mahlaoui, Stephan Ehl, Sabine M. El-Helou, Barbara Pietrucha, Alessandro Plebani, Michiel van der Flier, Koen van Aerde, Sara S. Kilic, Shereen M. Reda, Larysa Kostyuchenko, Elizabeth McDermott, Nermeen Galal, Claudio Pignata, Juan Luis Santos Perez, Hans-Juergen Laws, Tim Niehues, Necil Kutukculer, Markus G. Seidel, Laura Marques, Peter Ciznar, John David M. Edgar, Pere Soler-Palacin, Horst von Bernuth, Renate Krueger, Isabelle Meyts, Ulrich Baumann, Maria Kanariou, Bodo Grimbacher, Fabian Hauck, Dagmar Graf, Luis Ignacio Gonzalez Granado, Seraina Prader, Ismail Reisli, Mary Slatter, Carlos Rodriguez-Gallego, Peter D. Arkwright, Claire Bethune, Elena Deripapa, Svetlana O. Sharapova, Kai Lehmberg, E. Graham Davies, Catharina Schuetz, Gerhard Kindle, Ralf Schubert
Summary: The study analyzed mortality and immunity data of patients with ataxia-telangiectasia (A-T) in relation to IgA deficiency, finding that patients with IgA deficiency have significantly lower survival rates, lymphocyte counts, and subsets compared to A-T patients without IgA deficiency. This suggests that IgA deficiency may indicate a poorer prognosis for classical A-T patients.
JOURNAL OF CLINICAL IMMUNOLOGY
(2021)
Article
Oncology
Renata Neves, Blanca De Dios Perez, Rafal Panek, Sumit Jagani, Sophie Wilne, Jayesh M. Bhatt, Caterina Caputi, Emilia Cirillo, David J. Coman, Gregor Dueckers, Donald L. Gilbert, Mary Kay Koenig, Lobna Mansour, Elizabeth McDermott, Micaela Pauni, Claudio Pignata, Susan L. Perlman, Oscar Porras, Mariela Betina Porto, Katherine Schon, Pere Soler-Palacin, Sam Nick Russo, Masatoshi Takagi, Marc Tischkowitz, Claire Wainwright, Madhumita Dandapani, Cristine Glazebrook, Mohnish Suri, William P. Whitehouse, Robert A. Dineen
Summary: This study used the e-Delphi technique to investigate the current international practice and consensus regarding cancer surveillance in ataxia telangiectasia (A-T) patients. The survey revealed significant variations in cancer surveillance practices among experts and centers. Consensus was reached that evidence-based guidelines are needed for cancer surveillance in A-T patients, with specific recommendations for tests, age range, and surveillance intervals. However, further research is required in some areas.
Review
Immunology
Tannaz Moeini Shad, Reza Yazdani, Parisa Amirifar, Samaneh Delavari, Marzieh Heidarzadeh Arani, Seyed Alireza Mahdaviani, Mahnaz Sadeghi-Shabestari, Asghar Aghamohammadi, Nima Rezaei, Hassan Abolhassani
Summary: Ataxia-telangiectasia (AT) is a rare autosomal recessive neurological disorder, and some patients may present with atypical symptoms. Through data collection and literature review on Iranian AT patients, it was found that some patients have later onset age and slower disease progression, along with immunological features and increased cancer risk. Overall, atypical presentations may be associated with deleterious mutations and known modifying factors.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Genetics & Heredity
Sara Biagiotti, Ambra Barone, Mattia Paolo Aliano, Giulia Federici, Marco Malatesta, Caterina Caputi, Silvia Soddu, Vincenzo Leuzzi, Luciana Chessa, Mauro Magnani
Summary: Most ATM variants associated with Ataxia Telangiectasia are classified as variants with uncertain significance. This study focused on a specific ATM variant found in Lebanese brothers, revealing it to be pathogenic even though it causes an atypical phenotype. Dexamethasone showed therapeutic potential on this and possibly other missense ATM variants.
FRONTIERS IN GENETICS
(2021)
Review
Biochemistry & Molecular Biology
Goutham Narayanan Subramanian, Abrey Jie Yeo, Magtouf Hnaidi Gatei, David John Coman, Martin Francis Lavin
Summary: The ATM protein kinase has diverse functions in the cell, including protecting DNA, maintaining cellular homeostasis, and safeguarding against external and internal damage.
Article
Virology
Ana Mendez-Echevarria, Maria Belen Caminoa, Teresa del Rosal, Inmaculada Casas, Francisco Pozo, Samuel Ignacio Pascual-Pascual, Mar Garcia-Romero, Carmen Camara, Cristina Calvo
Summary: The study found that patients with A-T are more likely to present symptomatic viral infections compared to controls, especially those with lower IgA and higher IgM levels, as well as increased CD8+ cell counts.
Review
Pharmacology & Pharmacy
Bhanu Priya, Srimadhavi Ravi, Sivapriya Kirubakaran
Summary: The DNA Damage and Response (DDR) pathway is crucial for maintaining genome integrity and preventing cancer development. The DDR pathway, particularly the ATM and ATR kinases, plays a vital role in recognizing and repairing DNA double-strand breaks (DSBs), a severe DNA damage that can lead to genomic instability. Cancer cells, with a high burden of DSBs, heavily rely on efficient DSB repair mechanisms for their survival. Therefore, targeting DSB repair pathways, such as ATM and ATR, can enhance the efficacy of DNA-damaging agents in cancer treatment. This review focuses on the roles of ATM and ATR in the DDR pathway, challenges in targeting these kinases, and current clinical trials of their inhibitors.
DRUG DISCOVERY TODAY
(2023)
Review
Health Care Sciences & Services
Sharon A. McGrath-Morrow, Cynthia C. Rothblum-Oviatt, Jennifer Wright, Haley Schlechter, Maureen A. Lefton-Greif, Valerie A. Natale, Thomas O. Crawford, Howard M. Lederman
Summary: Ataxia telangiectasia (A-T) is a rare autosomal recessive disease characterized by progressive ataxia, oculocutaneous telangiectasias, and immune system impairment. Patients with A-T have an increased risk of malignancy, leading to premature death.
JOURNAL OF MULTIDISCIPLINARY HEALTHCARE
(2021)
Article
Biology
Harvey Perez, May F. Abdallah, Jose Chavira, Angelina S. Norris, Martin T. Egeland, Karen L. Vo, Callan L. Buechsenschuetz, Valentina Sanghez, Jeannie L. Kim, Molly Pind, Kotoka Nakamura, Geoffrey G. Hicks, Richard A. Gatti, Joaquin Madrenas, Michelina Iacovino, Peter J. McKinnon, Paul J. Mathews
Summary: By introducing null mutations in both the Atm and Aptx genes in mice, researchers have created a novel mouse model that exhibits progressively severe ataxic phenotype and cerebellar molecular layer atrophy. The perturbations significantly alter the biophysical properties of cerebellar Purkinje neurons and their neural activity, correlating with cerebellar atrophy and ataxia over the animal's first year of life. Additionally, the double mutant mice also show a predisposition to cancer and immune abnormalities, resembling symptoms of A-T.
Article
Genetics & Heredity
Itana Gomes Alves Andrade, Fabiola Isabel Suano-Souza, Fernando Luiz Affonso Fonseca, Carolina Sanchez Aranda Lago, Roseli Oselka Saccardo Sarni
Summary: The study revealed that nearly 40% of A-T patients have selenium levels below the reference value, and low GPx activity. There was a significant, inverse and independent association between selenium concentrations and oxidative stress biomarkers.
ORPHANET JOURNAL OF RARE DISEASES
(2021)
Article
Genetics & Heredity
Boxun Zhao, Minh A. Nguyen, Sijae Woo, Jinkuk Kim, Timothy W. Yu, Eunjung Alice Lee
Summary: This study conducted retroelement profiling on whole-genome sequencing data from 237 individuals with ataxia telangiectasia (A-T), and found retroelement insertions in the ATM gene in 15 individuals. Most of the insertions were located in noncoding regions, and 12 intronic insertions led to ATM loss of function. The study also presented proof-of-concept antisense oligonucleotides that can suppress cryptic exonization caused by deep intronic retroelement insertion.
AMERICAN JOURNAL OF HUMAN GENETICS
(2023)
Article
Oncology
Jingyu Xun, Hideo Ohtsuka, Katsuya Hirose, Daisuke Douchi, Shun Nakayama, Masaharu Ishida, Takayuki Miura, Kyohei Ariake, Masamichi Mizuma, Kei Nakagawa, Takanori Morikawa, Toru Furukawa, Michiaki Unno
Summary: This study reveals the impact of ATM expression on the prognosis of pancreatic cancer patients. Loss of ATM expression enhances tumor development, suppresses apoptosis, and reduces sensitivity to gemcitabine. Additionally, loss of phosphorylated ATM is associated with poor prognosis in pancreatic cancer patients.
Article
Genetics & Heredity
B. Dalmasso, L. Pastorino, V Nathan, N. N. Shah, J. M. Palmer, M. Howlie, P. A. Johansson, N. D. Freedman, B. D. Carter, L. Beane-Freeman, B. Hicks, A. Molven, H. Helgadottir, A. Sankar, H. Tsao, A. J. Stratigos, P. Helsing, R. Van Doorn, N. A. Gruis, M. Visser, K. A. W. Wadt, G. Mann, E. A. Holland, E. Nagore, M. Potrony, S. Puig, C. Menin, K. Peris, M. C. Fargnoli, D. Calista, N. Soufir, M. Harland, T. Bishop, P. A. Kanetsky, D. E. Elder, V Andreotti, I Vanni, W. Bruno, V Hoiom, M. A. Tucker, X. R. Yang, P. A. Andresen, D. J. Adams, M. T. Landi, N. K. Hayward, A. M. Goldstein, P. Ghiorzo
Summary: This study supports the role of ATM as a melanoma predisposition gene, with LOF variants suggesting a moderate-risk.
GENETICS IN MEDICINE
(2021)