Log in to search using one of your social media accounts:

 

Mutational Spectrum of Fanconi Anemia Associated Myeloid Neoplasms

Klin Padiatr 2017; 229: 329-334 DOI: 10.1055/s-0043-117046Individuals with Fanconi anemia (FA) have a high risk of developing myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML), yet the secondary somatic mutations lending to these malignancies remain to be further elucidated. We employed a next-generation sequencing myeloid neoplasia gene panel to determine the mutational spectrum of FA-related MDS/AML. Ten of 16 patients showed missense, nonsense, insertion or duplication mutations in 13 genes. In contrast to findings in MDS in the general population, mutations in genes involved in RNA splicing were rarely affected. Mutations in RUNX1 and genes of the RAS pathway appeared more instrumental in the pathogenesis of FA myeloid malignancies. RUNX1 mutations were associated with more advanced disease. Interestingly, one patient with refractory anemia with ring sideroblasts harbored the SF3B1 p.K700E mutation highlighting the mutation’s causative role in MDS with ring sideroblasts even in the context of FA. On the whole, our findings implicate a different genetic architecture of FA MDS/AML from adult sporadic MDS. Notably, the genetic events resemble those described in pediatric MDS. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: Klinische Padiatrie - Category: Pediatrics Authors: Tags: Original Article Source Type: research

Related Links:

Authors: Alter BP Abstract Patients with inherited bone marrow failure syndromes are usually identified when they develop hematologic complications such as severe bone marrow failure, myelodysplastic syndrome, or acute myeloid leukemia. They often have specific birth defects or other physical abnormalities that suggest a syndrome, and sequencing of specific genes or next-generation sequencing can determine or confirm the particular syndrome. The 4 most frequent syndromes are Fanconi anemia, dyskeratosis congenita, Diamond Blackfan anemia, and Shwachman Diamond syndrome. This review discusses the major complications...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: West AH, Churpek JE Abstract Patients with inherited bone marrow failure syndromes (IBMFSs) classically present with specific patterns of cytopenias along with congenital anomalies and/or other physical features that are often recognizable early in life. However, increasing application of genomic sequencing and clinical awareness of subtle disease presentations have led to the recognition of IBMFS in pediatric and adult populations more frequently than previously realized, such as those with early onset myelodysplastic syndrome (MDS). Given the well-defined differences in clinical management needs and outc...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Patients with inherited bone marrow failure syndromes are usually identified when they develop hematologic complications such as severe bone marrow failure, myelodysplastic syndrome, or acute myeloid leukemia. They often have specific birth defects or other physical abnormalities that suggest a syndrome, and sequencing of specific genes or next-generation sequencing can determine or confirm the particular syndrome. The 4 most frequent syndromes are Fanconi anemia, dyskeratosis congenita, Diamond Blackfan anemia, and Shwachman Diamond syndrome. This review discusses the major complications that develop as the patients with ...
Source: Blood - Category: Hematology Authors: Tags: Hematopoiesis and Stem Cells, Transplantation, Review Articles, Clinical Trials and Observations Source Type: research
Hematopoietic stem cell transplantation (HSCT) is considered the gold standard for treatment of hematologic malignancies, including Fanconi anemia (FA), a cancer-prone disease with extremely high incidence of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). However, eradication of residual leukemia stem cells (LSCs), which often contributes to relapse, remains the challenge for HSCT. Here we investigate the interaction between leukemic mesenchymal niche and donor hematopoietic stem progenitor cells (HSPCs) by modeling FA HSCT.
Source: Experimental Hematology - Category: Hematology Authors: Source Type: research
Myeloid malignancies can be either primary or secondary, whether or not a specific cause can be determined. Fanconi anemia (FA), a rare constitutional bone marrow failure, usually presents an increased possibility of clonal evolution, due to the increase in chromosomal instability, TP53 activation, and cell death. The evolution of FA may include aplastic anemia by the progressive failure of the bone marrow and myelod neoplasias, such as acute myeloid leukemia and myelodysplastic syndrome. Chromosome abnormalities, particularly of chromosomes, 1, 3, and 7, during the aplastic phase of the disease are predictive of evolution...
Source: Journal of Pediatric Hematology Oncology - Category: Hematology Tags: Online Articles: Clinical and Laboratory Observations Source Type: research
Authors: Young Son M, Deng CX, Hoeijmarkers JH, Rebel VI, Hasty P Abstract Benzene is a common environmental toxin and its metabolite, 1-4-Benzoquinone (BQ) causes hematopoietic cancers like myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). BQ has not been comprehensively assessed for its impact on genome maintenance, limiting our understanding of the true health risks associated with benzene exposure and our ability to identify people with increased sensitivity to this genotoxin. Here we analyze the impact BQ exposure has on wild type and DNA repair-defective mouse embryonic stem (ES) cells and wild...
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
Publication date: September–December 2014 Source:Best Practice & Research Clinical Haematology, Volume 27, Issues 3–4 Author(s): Blanche P. Alter Fanconi anemia (FA) is a rare autosomal recessive cancer-prone inherited bone marrow failure syndrome, due to mutations in 16 genes, whose protein products collaborate in a DNA repair pathway. The major complications are aplastic anemia, acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), and specific solid tumors. A severe subset, due to mutations in FANCD1/BRCA2, has a cumulative incidence of cancer of 97% by age 7 years; the cancers are AML, brain ...
Source: Best Practice and Research Clinical Haematology - Category: Hematology Source Type: research
Fanconi anemia (FA) is the most frequent inherited cause of bone marrow failure (BMF). Most FA patients experience hematopoietic stem cell attrition and cytopenia during childhood, which along with intrinsic chromosomal instability, favor clonal evolution and the frequent emergence in their teens or young adulthood of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). To early identify and further predict bone marrow (BM) clonal progression and enable timely treatment, the follow-up of FA patients includes regular BM morphological and cytogenetic examinations. Allogeneic hematopoietic stem cell transplantatio...
Source: Blood - Category: Hematology Authors: Tags: How I Treat, Free Research Articles, Myeloid Neoplasia, CME article Source Type: research
CONCLUSION: In this HHMC-referred hematologic malignancy cohort, HCS was confirmed in 12 patients (18%). HCS identification provides insight for improved and individualized treatment, as well as screening/surveillance opportunities for family members. The HHMC has facilitated HCS diagnosis; with increased clinical awareness of hematologic malignancy predisposition syndromes, more patients who may benefit from evaluation can be identified. Mutation panels intended for prognostication may provide increased clinical suspicion for germ-line testing. PMID: 27210295 [PubMed - as supplied by publisher]
Source: Clinical Lymphoma and Myeloma - Category: Cancer & Oncology Authors: Tags: Clin Lymphoma Myeloma Leuk Source Type: research
Abstract Inherited bone marrow failure (IBMF) syndromes are a heterogeneous group of rare hematological disorders characterized by the impairment of hematopoiesis, which harbor specific clinical presentations and pathogenic mechanisms. Some of these syndromes may progress through clonal evolution, myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). Most prominent are failures of DNA repair such as Fanconi Anemia and much rarer failure of ribosomal apparatus, e.g., Diamond Blackfan Anemia or of telomere elongation such as dyskeratosis congenita. In these congenital disorders, hematopoietic stem cell tr...
Source: International Journal of Hematology - Category: Hematology Authors: Tags: Int J Hematol Source Type: research
More News: Acute Leukemia | Acute Myeloid Leukemia | Anemia | Cancer & Oncology | Faconi Anemia | Genetics | Leukemia | Myelodysplastic Syndrome | Pediatrics