Publications by authors named "Schlegelberger B"

Patients with hereditary breast and ovarian cancer (HBOC) are not only concerned about their own health but also about that of their children, grandchildren, and other relatives. Therefore, they have specific needs for information and support. During genetic counseling guidance is provided to HBOC patients and other individuals who may be at risk for familial cancer.

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Acute myeloid leukemia (AML) with the t(7;12)(q36;p13) translocation occurs only in very young children and has a poor clinical outcome. The expected oncofusion between break point partners (motor neuron and pancreas homeobox 1 [MNX1] and ETS variant transcription factor 6 [ETV6]) has only been reported in a subset of cases. However, a universal feature is the strong transcript and protein expression of MNX1, a homeobox transcription factor that is normally not expressed in hematopoietic cells.

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Article Synopsis
  • Chronic myeloid leukemia (CML) is characterized by the Philadelphia translocation (t(9;22)) that creates the BCR::ABL1 fusion gene, which is key to its diagnosis.
  • Other myeloproliferative neoplasms (MPNs) also exhibit specific chromosomal abnormalities, but these are not unique to any one type and diagnosis relies on various cytological, histopathological, and molecular features.
  • The progression of CML and other MPNs can be influenced by additional mutations, particularly in key genes like JAK2, MPL, and CALR, as well as the order in which these mutations occur, making ongoing monitoring essential.
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Background: The increasing volume and intricacy of sequencing data, along with other clinical and diagnostic data, like drug responses and measurable residual disease, creates challenges for efficient clinical comprehension and interpretation. Using paediatric B-cell precursor acute lymphoblastic leukaemia (BCP-ALL) as a use case, we present an artificial intelligence (AI)-assisted clinical framework clinALL that integrates genomic and clinical data into a user-friendly interface to support routine diagnostics and reveal translational insights for hematologic neoplasia.

Methods: We performed targeted RNA sequencing in 1365 cases with haematological neoplasms, primarily paediatric B-cell precursor acute lymphoblastic leukaemia (BCP-ALL) from the AIEOP-BFM ALL study.

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Wilson's disease (WD, MIM#277900) is an autosomal recessive disorder resulting in copper excess caused by biallelic variants in the ATP7B gene (MIM#606882) encoding a copper transporting P-type ATPase. ATP7B variants of unknown significance (VUS) are detected frequently, sometimes impeding a clear diagnosis. Functional analyses can help to classify these variants as benign or pathogenic.

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Partial deletions at chromosome 7q11.23 are causative for the autosomal-dominant Williams-Beuren syndrome (WBS), whereas the partial duplication of this region leads to the 7q11.23 duplication syndrome.

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Article Synopsis
  • - Monogenic autoinflammatory diseases (AID) are genetic conditions that lead to unexplained or excessive inflammation due to defects in the innate immune system, and accurate diagnosis relies on identifying specific genetic variants.
  • - Researchers conducted whole exome sequencing (WES) on 125 children suspected of having monogenic AID, using a step-wise strategy that first analyzed a small panel of known relevant genes, then expanded to a larger gene panel.
  • - The study found that analyzing the smaller gene panel (13 genes) diagnosed 16% of patients, while the larger panel (542 genes) diagnosed 20.8%, but WES analysis did not improve diagnostic yield, indicating that targeted gene panels are sufficient for early diagnosis in
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Although hematologic malignancies (HM) are no longer considered exclusively sporadic, additional awareness of familial cases has yet to be created. Individuals carrying a (likely) pathogenic germline variant (e.g.

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Soft tissue sarcomas (STS) may arise as a consequence of germline variants in cancer predisposition genes (CPGs). We believe that elucidating germline sarcoma predisposition is critical for understanding disease biology and therapeutic requirements. Participation in surveillance programs may allow for early tumor detection, early initiation of therapy and, ultimately, better outcomes.

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Myeloid/lymphoid neoplasms with eosinophilia (MLN-eos) are rare haematological neoplasms primarily affecting adults. The heterogeneous clinical picture and the rarity of the disease, especially in children, may delay an early diagnosis. MLN-eos are characterized by constitutive tyrosine kinase (TK) activity due to gene fusions.

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Background: The molecular pathogenesis of T-cell large granular lymphocytic leukemia (T-LGLL), a mature T-cell leukemia arising commonly from T-cell receptor αβ-positive CD8 memory cytotoxic T cells, is only partly understood. The role of deregulated methylation in T-LGLL is not well known. We analyzed the epigenetic profile of T-LGLL cells of 11 patients compared to their normal counterparts by array-based DNA methylation profiling.

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Article Synopsis
  • Gain-of-function variants in the STING gene are responsible for STING-Associated Vasculopathy with onset in Infancy (SAVI), previously thought to only occur with heterozygous mutations.
  • Recent findings highlight a specific homozygous variant, c.841C>T, causing SAVI in four unrelated patients, all presenting with interstitial lung disease and varying disease severity.
  • This research challenges the established view of SAVI as an autosomal dominant condition, suggesting an autosomal recessive inheritance pattern and potentially aiding in diagnosis and treatment approaches.
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Pathogenic loss-of-function germline variants cause autosomal dominantly-inherited familial platelet disorder with predisposition to hematologic malignancies (RUNX1-FPD). RUNX1-FPD is characterized by incomplete penetrance and a broad spectrum of clinical phenotypes, even within affected families. Heterozygous germline variants set the basis for leukemogenesis, but, on their own, they are not transformation-sufficient.

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Patients with myeloid neoplasia are classified by the WHO classification systems. Besides clinical and hematological criteria, cytogenetic and molecular genetic alterations highly impact treatment stratification. In routine diagnostics, a combination of methods is used to decipher different types of genetic variants.

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Background: Genetic tumor risk syndromes are responsible for at least five to ten percent of the 4 million cases of cancer diagnosed in Europe every year. Currently, the care of oncological patients suffers from a lack of specialists in medical genetics and also a lack of access to genetic care in rural areas and structured care pathways between oncologists and medical geneticists. As a result, genetic tumor risk syndromes are underdiagnosed with potentially fatal consequences for patients and their families.

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Background: In hepatocellular carcinoma (HCC), histone deacetylases (HDACs) are frequently overexpressed. This results in chromatin compaction and silencing of tumor-relevant genes and microRNAs. Modulation of microRNA expression is a potential treatment option for HCC.

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Chromosomal instability (CIN) can be a driver of tumorigenesis but is also a promising therapeutic target for cancer associated with poor prognosis such as triple negative breast cancer (TNBC). The treatment of TNBC cells with defects in DNA repair genes with poly(ADP-ribose) polymerase inhibitor (PARPi) massively increases CIN, resulting in apoptosis. Here, we identified a previously unknown role of microRNA-449a in CIN.

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