Haematologica最新文献

{"title":"<i>UBTF</i> tandem duplications in pediatric myelodysplastic syndrome and acute myeloid leukemia: implications for clinical screening and diagnosis.","authors":"Juan M Barajas, Masayuki Umeda, Lisett Contreras, Mahsa Khanlari, Tamara Westover, Michael P Walsh, Emily Xiong, Chenchen Yang, Brittney Otero, Marc Arribas-Layton, Sherif Abdelhamed, Guangchun Song, Xiaotu Ma, Melvin E Thomas Rd, Jing Ma, Jeffery M Klco","doi":"10.3324/haematol.2023.284683","DOIUrl":"10.3324/haematol.2023.284683","url":null,"abstract":"<p><p>Recent genomic studies in adult and pediatric acute myeloid leukemia (AML) demonstrated recurrent in-frame tandem duplications (TD) in exon 13 of upstream binding transcription factor (UBTF). These alterations, which account for approximately 4.3% of AML in childhood and about 3% in adult AML aged <60 years of age, are subtype-defining and associated with poor outcomes. Here, we provide a comprehensive investigation into the clinicopathological features of UBTF-TD myeloid neoplasms in childhood, including 89 unique pediatric AML and 6 myelodysplastic syndrome (MDS) cases harboring a tandem duplication in exon 13 of UBTF. We demonstrate that UBTF-TD myeloid tumors are associated with dysplastic features, low bone marrow blast infiltration, and low white blood cell count. Furthermore, using bulk and single-cell analyses, we confirm that UBTF-TD is an early and clonal event associated with a distinct transcriptional profile, whereas the acquisition of FLT3 or WT1 mutations is associated with more stem cell-like programs. Lastly, we report rare duplications within exon 9 of UBTF that phenocopy exon 13 duplications, expanding the spectrum of UBTF alterations in pediatric myeloid tumors. Collectively, we comprehensively characterize pediatric AML and MDS with UBTF-TD, and highlight key clinical and pathologic features that distinguish this new entity from other molecular subtypes of AML.</p>","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290532/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139996084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-myeloma light chain cast nephropathy: a multicenter retrospective study on clinicopathological characteristics.","authors":"Ana Cristina Martins, Jean-Baptiste Gibier, Charles Ronsin, Christine Kandel-Aznar, Anne Moreau, Marion Chapal, Diogo Francisco, Hamza Sakhi, Julie Oniszczuk, Lorraine Gueguen, Anne Grunenwald, Mathilde Devaux, Alexandre Karras, Virginie Royal, Marion Rabant, Viviane Gnemmi, Jérôme Olagne, Jean-Paul Duong Van Huyen, Pierre Isnard","doi":"10.3324/haematol.2024.285031","DOIUrl":"10.3324/haematol.2024.285031","url":null,"abstract":"","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140305429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Germline bi-allelic <i>SH2B3/LNK</i> alteration predisposes to a neonatal juvenile myelomonocytic leukemia-like disorder.","authors":"Chloé Arfeuille, Yoann Vial, Margaux Cadenet, Aurélie Caye-Eude, Odile Fenneteau, Quentin Neven, Adeline A Bonnard, Simone Pizzi, Giovanna Carpentieri, Yline Capri, Katia Girardi, Lucia Pedace, Marina Macchiaiolo, Kamel Boudhar, Monia Ben Khaled, Wadih Abou Chahla, Anne Lutun, Mony Fahd, Séverine Drunat, Elisabetta Flex, Jean-Hugues Dalle, Marion Strullu, Franco Locatelli, Marco Tartaglia, Hélène Cavé","doi":"10.3324/haematol.2023.283917","DOIUrl":"10.3324/haematol.2023.283917","url":null,"abstract":"<p><p>Juvenile myelomonocytic leukemia (JMML) is a rare, generally aggressive myeloproliferative neoplasm affecting young children. It is characterized by granulomonocytic expansion, with monocytosis infiltrating peripheral tissues. JMML is initiated by mutations upregulating RAS signaling. Approximately 10% of cases remain without an identified driver event. Exome sequencing of two unrelated cases of familial JMML of unknown genetics and analysis of the French JMML cohort identified 11 patients with variants in SH2B3, encoding LNK, a negative regulator of the JAK-STAT pathway. All variants were absent from healthy population databases, and the mutation spectrum was consistent with a loss of function of the LNK protein. A stoploss variant was shown to affect both protein synthesis and stability. The other variants were either truncating or missense, the latter affecting the SH2 domain that interacts with activated JAK. Of the 11 patients, eight from five families inherited pathogenic bi-allelic SH2B3 germline variants from their unaffected heterozygous parents. These children represent half of the cases with no identified causal mutation in the French cohort. They displayed typical clinical and hematologic features of JMML with neonatal onset and marked thrombocytopenia. They had a hypomethylated DNA profile with fetal characteristics and did not have additional genetic alterations. All patients showed partial or complete spontaneous clinical resolution. However, progression to thrombocythemia and immunity-related pathologies may be of concern later in life. Bi-allelic SH2B3 germline mutations thus define a new condition predisposing to a JMML-like disorder, suggesting that JAK pathway deregulation is capable of initiating JMML, and opening new therapeutic options.</p>","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290538/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138046755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeting glycolysis to rescue 2-hydroxyglutarate immunosuppressive effects in dendritic cells and acute myeloid leukemia.","authors":"Angela Maria Savino, Lucille Stuani","doi":"10.3324/haematol.2023.284893","DOIUrl":"10.3324/haematol.2023.284893","url":null,"abstract":"","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290541/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combination chemotherapy for Hodgkin lymphoma.","authors":"Alison J Moskowitz","doi":"10.3324/haematol.2024.285825","DOIUrl":"10.3324/haematol.2024.285825","url":null,"abstract":"","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More is not always better, sometimes it is just more.","authors":"Antonio Salar Silvestre","doi":"10.3324/haematol.2024.285019","DOIUrl":"10.3324/haematol.2024.285019","url":null,"abstract":"","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290495/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140305427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LNK/<i>SH2B3</i> as a novel driver in juvenile myelomonocytic leukemia.","authors":"Astrid Wintering, Anna Hecht, Julia Meyer, Eric B Wong, Juwita Hübner, Sydney Abelson, Kira Feldman, Vanessa E Kennedy, Cheryl A C Peretz, Deborah L French, Jean Ann Maguire, Chintan Jobaliya, Marta Rojas Vasquez, Sunil Desai, Robin Dulman, Eneida Nemecek, Hilary Haines, Mahmoud Hammad, Alaa El Haddad, Scott C Kogan, Zied Abdullaev, Farid F Chehab, Sarah K Tasian, Catherine C Smith, Mignon L Loh, Elliot Stieglitz","doi":"10.3324/haematol.2023.283776","DOIUrl":"10.3324/haematol.2023.283776","url":null,"abstract":"<p><p>Mutations in five canonical Ras pathway genes (NF1, NRAS, KRAS, PTPN11 and CBL) are detected in nearly 90% of patients with juvenile myelomonocytic leukemia (JMML), a frequently fatal malignant neoplasm of early childhood. In this report, we describe seven patients diagnosed with SH2B3-mutated JMML, including five patients who were found to have initiating, loss-of-function mutations in the gene. SH2B3 encodes the adaptor protein LNK, a negative regulator of normal hematopoiesis upstream of the Ras pathway. These mutations were identified to be germline, somatic or a combination of both. Loss of function of LNK, which has been observed in other myeloid malignancies, results in abnormal proliferation of hematopoietic cells due to cytokine hypersensitivity and activation of the JAK/STAT signaling pathway. In vitro studies of induced pluripotent stem cell-derived JMML-like hematopoietic progenitor cells also demonstrated sensitivity of SH2B3-mutated hematopoietic progenitor cells to JAK inhibition. Lastly, we describe two patients with JMML and SH2B3 mutations who were treated with the JAK1/2 inhibitor ruxolitinib. This report expands the spectrum of initiating mutations in JMML and raises the possibility of targeting the JAK/STAT pathway in patients with SH2B3 mutations.</p>","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139048630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prognostic impact of <i>SF3B1</i> mutation and multilineage dysplasia in myelodysplastic syndromes with ring sideroblasts: a Mayo Clinic study of 170 informative cases.","authors":"Faiqa Farrukh, Maymona Abdelmagid, Abhishek Mangaonkar, Mrinal Patnaik, Aref Al-Kali, Michelle A Elliott, Kebede H Begna, Christopher C Hook, William J Hogan, Animesh Pardanani, Mark R Litzow, Rhett P Ketterling, Naseema Gangat, Daniel A Arber, Attilio Orazi, Rong He, Kaaren Reichard, Ayalew Tefferi","doi":"10.3324/haematol.2023.284719","DOIUrl":"10.3324/haematol.2023.284719","url":null,"abstract":"<p><p>The revised 4th edition of the World Health Organization (WHO4R) classification lists myelodysplastic syndromes with ring sideroblasts (MDS-RS) as a separate entity with single lineage (MDS-RS-SLD) or multilineage (MDS-RS-MLD) dysplasia. The more recent International Consensus Classification (ICC) distinguishes between MDS with SF3B1 mutation (MDS-SF3B1) and MDS-RS without SF3B1 mutation; the latter is instead included under the category of MDS not otherwise specified. The current study includes 170 Mayo Clinic patients with WHO4R-defined MDS-RS, including MDS-RS-SLD (N=83) and MDS-RSMLD (N=87); a subset of 145 patients were also evaluable for the presence of SF3B1 and other mutations, including 126 with (87%) and 19 (13%) without SF3B1 mutation. Median overall survival for all 170 patients was 6.6 years with 5- and 10-year survival rates of 59% and 25%, respectively. A significant difference in overall survival was apparent between MDS-RS-MLD and MDS-RS-SLD (P<0.01) but not between MDS-RS with and without SF3B1 mutation (P=0.36). Multivariable analysis confirmed the independent prognostic contribution of MLD (hazard ratio=1.8, 95% confidence interval: 1.1-2.8; P=0.01) and also identified age (P<0.01), transfusion need at diagnosis (P<0.01), and abnormal karyotype (P<0.01), as additional risk factors; the impact from SF3B1 or other mutations was not significant. Leukemia-free survival was independently affected by abnormal karyotype (P<0.01), RUNX1 (P=0.02) and IDH1 (P=0.01) mutations, but not by MLD or SF3B1 mutation. Exclusion of patients not meeting ICC-criteria for MDS-SF3B1 did not change the observations on overall survival. MLD-based, as opposed to SF3B1 mutation-based, disease classification for MDS-RS might be prognostically more relevant.</p>","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290503/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140049335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imatinib treatment and longitudinal growth in pediatric patients with chronic myeloid leukemia: influence of demographic, pharmacological, and genetic factors in the German CML-PAED cohort.","authors":"Sophie Stiehler, Stephanie Sembill, Oliver Schleicher, Michaela Marx, Manfred Rauh, Manuela Krumbholz, Axel Karow, Meinolf Suttorp, Joachim Woelfle, Carlo Maj, Markus Metzler","doi":"10.3324/haematol.2023.284668","DOIUrl":"10.3324/haematol.2023.284668","url":null,"abstract":"<p><p>In children and adolescents, impaired growth due to tyrosine kinase inhibitor therapy remains an insufficiently studied adverse effect. This study examines demographic, pharmacological, and genetic factors associated with impaired longitudinal growth in a uniform pediatric cohort treated with imatinib. We analyzed 94 pediatric patients with chronic myeloid leukemia (CML) diagnosed in the chronic phase and treated with imatinib for >12 months who participated in the Germany-wide CML-PAEDII study between February 2006 and February 2021 (clinicaltrials gov. Identifier: NCT00445822). During imatinib treatment, significant height reduction occurred, with medians of -0.35 standard deviation score (SDS) at 12 months and -0.76 SDS at 24 months. Cumulative height SDS change (Δ height SDS) showed a more pronounced effect in prepubertal patients during the first year but were similar between prepubertal and pubertal subgroups by the second year (-0.55 vs. -0.50). From months 12 to 18 on imatinib, only 18% patients achieved individually longitudinal growth adequate to the growth standard (Δ height SDS ≥0). When patients were divided into two subgroups based on median Δ height SDS (classifier Δ height SDS > or ≤-0.37) after 1 year on imatinib therapy, cohort 1 (Δ height SDS ≤-0.37) showed younger age at diagnosis, a higher proportion of prepubertal children, but also better treatment response and higher imatinib serum levels. Exploring the association of growth parameters with pharmacokinetically relevant single nucleotide polymorphisms, known for affecting imatinib response, showed no correlation. This retrospective study provides new insights into imatinib-related growth impairment. We emphasize the importance of optimizing treatment strategies for pediatric patients to realize their maximum growth potential.</p>","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11290534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does hemoglobin affect measures of mitochondrial respiration in red blood cells? Comment to \"Increased retention of functional mitochondria in mature sickle red blood cells is associated with increased sickling tendency, hemolysis and oxidative stress\".","authors":"Wayne T Willis, Alexander C Berry, Bruce L Gladden","doi":"10.3324/haematol.2024.286135","DOIUrl":"https://doi.org/10.3324/haematol.2024.286135","url":null,"abstract":"","PeriodicalId":12964,"journal":{"name":"Haematologica","volume":null,"pages":null},"PeriodicalIF":8.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}