Publications by authors named "Jongmi Lee"

: Myeloid neoplasms encompass a diverse group of disorders. In this study, we aimed to analyze the clinical and genomic data of patients with myeloproliferative neoplasm (MPN), myelodysplastic neoplasm (MDS), and their overlapping conditions, such as MDS/MPN and aplastic anemia (AA), to help redefine the disease classification. : Clinico-genomic data of 1585 patients diagnosed with MPN ( = 715), MDS ( = 698), MDS/MPN ( = 78), and AA ( = 94) were collected.

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  • Myelofibrosis, including primary and secondary types, is characterized by aggressive behavior and poor outcomes, especially with thrombocytopenia, prompting this study on genetic and immunologic factors.
  • The study analyzed 226 patients, categorizing them based on platelet count and tracking their survival rates, which showed significantly lower survival in those with progressive thrombocytopenia.
  • Key findings indicated that specific mutations and fewer CD45RACD4 T cells were linked to worse survival outcomes, highlighting the importance of monitoring platelet dynamics in managing myelofibrosis.
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Accurate risk assessment of bone marrow failure syndrome (BMFS) is crucial for early diagnosis and intervention. Interpreting complete blood count (CBC) data is challenging without hematological expertise. To support primary physicians, we developed a predictive model using basic demographics and CBC data collected retrospectively from two major hospitals in South Korea.

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Background: mutations are associated with poor prognosis in myelodysplastic neoplasm (MDS) and AML. The updated 5th WHO classification and International Consensus Classification (ICC) categorize -mutated MDS and AML as unique entities. We conducted a multicenter study in Korea to investigate the characteristics of -mutated MDS and AML, focusing on diagnostic aspects based on updated classifications.

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  • Allogeneic hematopoietic stem cell transplantation (allo-HSCT) shows promise as a cure for myelodysplastic neoplasms (MDSs) and other blood cancers.
  • A study of 21 MDS patients post-transplantation revealed 38% developed new genetic mutations, indicating clonal hematopoiesis (CH) from donor cells and a higher incidence of CH compared to healthy individuals.
  • Additionally, telomere length in these patients shortened significantly, suggesting stress and rapid cell division in the new bone marrow environment may accelerate genetic changes.
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  • - The study focused on diagnosing inherited bone marrow failure syndromes (IBMFS) in 130 Korean patients, using various genomic sequencing methods to tackle diagnostic difficulties due to overlapping symptoms and genetic variability.
  • - A significant 50% of the patients achieved a genomic diagnosis, with classic IBMFS mutations identified mainly through targeted next-generation sequencing (NGS) and clinical exome sequencing (CES), while a newly defined syndrome (AmeDS) was found solely via CES.
  • - Additionally, 30 patients were diagnosed with other congenital diseases, demonstrating CES's effectiveness in revealing a range of conditions, emphasizing the importance of thorough genomic analysis in understanding IBMFS and its complexities.
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Background: Accurate quantification of the BCR::ABL1 transcripts is essential for measurable residual disease (MRD) monitoring in chronic myeloid leukemia (CML) after tyrosine kinase inhibitor (TKI) treatment. This study evaluated the newly developed digital real-time PCR method, Dr. PCR, as an alternative reverse transcription-PCR (qRT-PCR) for MRD detection.

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  • DDX41 mutations are the leading cause of familial myelodysplastic syndrome (MDS), but their exact role in the disease is not fully understood.
  • Researchers found that DDX41 impacts DNA damage responses linked to R-loops through its interactions with a specific RNA methylation complex (m6A-METTL complex) and a protein called YTHDC1.
  • The study suggests that DDX41 is crucial for managing R-loop levels and preventing genomic instability, thus offering potential targets for MDS treatment.
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Durable psoriasis improvement has been reported in a subset of psoriasis patients after treatment withdrawal of biologics blocking IL-23/Type 17 T-cell (T17) autoimmune axis. However, it is not well understood if systemic blockade of the IL-23/T17 axis promotes immune tolerance in psoriasis skin. The purpose of the study was to find translational evidence that systemic IL-17A blockade promotes regulatory transcriptome modification in human psoriasis skin immune cell subsets.

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This study aimed to validate the new European Leukemia Net (ELN) 2022 criteria for genetic risk stratification in older adults with acute myeloid leukemia (AML) and to determine the most likely set of clusters of similar cytogenetic and mutation properties correlated with survival outcomes in three treatment groups: intensive chemotherapy (IC), hypomethylating agents (HMA) alone, and HMA plus venetoclax (HMA/VEN). The study included 279 patients (aged ≥60 years) who received IC (N=131), HMA (N=76), and HMA/VEN (N=72) between July 2017 and October 2021. No significant differences were observed in survival among the groups according to ELN 2022 risk stratification.

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Clinical overlaps between psoriasis and atopic dermatitis (AD) are sometimes undiscernible, and there is no consensus on whether to treat the overlap phenotype as psoriasis or AD. We enrolled 41 patients diagnosed with either psoriasis or AD and clinically re-stratified them into classic psoriasis (n = 11), classic AD (n = 13), and the overlap phenotype between psoriasis and AD (n = 17). We compared the gene expression profiles of lesional and nonlesional skin biopsy tissues and the proteomic profiles of blood samples among the three comparison groups.

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Background: Multiple sclerosis (MS) is a chronic autoimmune inflammatory, demyelinating, and neurodegenerative disease affecting young adults. People with MS are highly interested in engaging in physical symptom management and decision-making but are often not actively engaged in symptom management discussions. Research examining the benefit of shared decision-making in the management of physical MS symptoms is sparse.

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Background: On the basis of the mounting evidence that type 17 T (T17) cells and increased IL-17 play a key role in driving hidradenitis suppurativa (HS) lesion development, biologic agents used previously in psoriasis that block signaling of IL-17A and/or IL-17F isoforms have been repurposed to treat HS.

Objective: Our research aimed to characterize the transcriptome of HS T17 cells compared to the transcriptome of psoriasis T17 cells, along with their ligand-receptor interactions with neighborhood immune cell subsets.

Methods: Single-cell data of 12,300 cutaneous immune cells from 8 deroofing surgical HS skin samples including dermal tunnels were compared to single-cell data of psoriasis skin (19,525 cells from 11 samples) and control skin (11,920 cells from 10 samples).

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  • Chronic lymphocytic leukemia (CLL) is the most common adult leukemia in Western countries but is rare in Asia, leading to limited genetic studies in this region.
  • This research focused on genetically analyzing 113 CLL patients from Korea using next-generation sequencing, discovering that mutations such as L265P and V217F were prevalent.
  • The study found that patients with certain genetic conditions, like somatic hypermutation (SHM) and specific mutations, had better treatment outcomes and overall survival compared to those without these features.
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The in-frame internal tandem duplication (ITD) of the FMS-like tyrosine kinase 3 () gene is an important negative prognostic marker in acute myeloid leukemia (AML). -ITD monitoring is essential for patients at relapse or those receiving -targeted therapies. Fragment analysis (FA) is commonly used to detect and quantify -ITDs; however, detecting low-burden -ITDs after a treatment is challenging.

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The wide application of next-generation sequencing (NGS) technologies has led to the discovery of multiple genetic alterations in pediatric acute lymphoblastic leukemia (ALL). In this work, we aimed to investigate the mutational spectrum in pediatric ALL. We employed a St.

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The Philadelphia-negative myeloproliferative neoplasms (MPNs) are divided in three major groups: polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF). The 2016 WHO classification incorporates also prefibrotic PMF (pre-PMF) and overt PMF. This study aimed to discriminate the clinical features, genetic alterations, and outcomes in patients with prefibrotic, overt PMF, and secondary MF (SMF).

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