Publications by authors named "Wataru Kamata"

Targeted radionuclide therapy (TRT) for internal pathway-directed treatment is a game changer for precision medicine. TRT improves tumor control while minimizing damage to healthy tissue and extends the survival for patients with cancer. The application of theranostic-paired TRT along with cellular phenotype and genotype correlative analysis has the potential for malignant disease management.

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Article Synopsis
  • STAT3 is a transcription factor involved in cancer progression, primarily through phosphorylation in myeloid neoplasms (MN), with mutations being rare.
  • In a study of 32 cases, STAT3 mutations were found with a frequency of less than 0.5%, predominantly in acute myeloid leukemia, myelodysplastic syndrome, and chronic myelomonocytic leukemia.
  • These mutations often co-occurred with other mutations and were linked to adverse disease characteristics, suggesting that identifying STAT3 mutations could be crucial for targeted therapies in MN patients.
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The simultaneous detection of :: and V617F was rarely reported and their clonal relationship and dynamic clonal shift were not characterized. Here, we described a unique case with the initial presentation as V617F+ primary myelofibrosis, followed by the emergence of + chronic myeloid leukemia. The patient then developed B-lymphoblastic leukemia.

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  • High-dose chemotherapy and autologous stem cell transplantation (ASCT) are standard treatments for multiple myeloma in patients under 65, but their effectiveness in patients older than 65 is disputed.
  • A study analyzed 55 patients aged 65-74, comparing those who received ASCT and those who did not, finding no significant differences in overall survival or progression-free survival between the two groups.
  • The study concluded that ASCT may be losing relevance for older patients, as new treatments like daratumumab can achieve comparable outcomes without the need for transplantation.
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Background: Invasive pulmonary Aspergillus and invasive bronchial aspergillosis is a life-threatening opportunistic fungal infection that predominantly affects immunocompromised hosts. A case series and review found that the mortality rate of invasive bronchial aspergillosis is high, at about 40%, and 23.7% of invasive bronchial aspergillosis patients require mechanical ventilator management.

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Myeloproliferative neoplasms (MPNs) are caused by genetic abnormalities in the stem cells and manifest with various systemic symptoms. Here, we describe a case of MPN complicated by alopecia areata. A 51-year-old woman visited our hematology department for further evaluation of a slight platelet elevation.

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Background: Aplastic anemia (AA) is a rare but fatal disorder characterized by pancytopenia due to bone marrow hypoplasia. Anti-glomerular basement membrane disease (anti-GBM disease) is an immune complex small-vessel vasculitis that presents as rapidly progressive glomerulonephritis and/or pulmonary hemorrhage. Although both involve autoreactive T cells that are partially triggered by human leukocyte antigen (HLA)-DR15, there have been no reports of their co-existence and the treatment strategy is not well understood.

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This paper reports a case of a 56-year-old male with IgG lambda plasmablastic myeloma exhibiting multiple chromosomal abnormalities. The patient initially presented with plasmablastic ascites and underwent early auto stem cell transplantation and achieved minimal residual disease-negative status but relapsed after 1.5 months and became refractory to novel drugs, such as proteasome inhibitor and daratumuab.

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Among cases of amyloid light-chain (AL) amyloidosis, cardiac amyloidosis is particularly known to be associated with a poor prognosis. However, a few established prognostic indicators exist that consider other organ involvements and a patient's general condition. Between 2012 and 2019, we retrospectively reviewed 27 patients, who were diagnosed with AL amyloidosis at our hospital.

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Purpose: Acute promyelocytic leukemia (APL) constitutes 5-10% of all cases of newly diagnosed acute myeloid leukemia. However, data on the epidemiology and risk factors for acute kidney injury (AKI) in patients with newly diagnosed APL are lacking. This study determined the incidence rate of AKI during induction chemotherapy for patients with newly diagnosed APL and the risk factors for AKI.

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Translocation t(4;14) is an independent prognostic factor for adverse outcome in multiple myeloma (MM). However, reports concerning the therapeutic effects of novel drugs on t(4;14) MM are few. We retrospectively investigated the clinical and prognostic significance of symptomatic MM cases with t(4;14) treated with novel therapies.

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Article Synopsis
  • AL amyloidosis is a serious condition where misfolded proteins build up in organs, leading to heart issues that can be fatal, especially in young patients.
  • A 47-year-old man with no prior heart problems experienced shortness of breath and was quickly diagnosed with primary AL cardiac amyloidosis, but after a brief recovery, he faced a severe heart failure relapse.
  • Despite immediate diagnostic efforts, he died within weeks, and an autopsy revealed that his heart function and blood flow were significantly compromised, indicating a severe form of the disease.
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Rationale: Although essential thrombocythemia (ET) and immune thrombocytopenia (ITP) have different etiologies, 3 previous reports have described ET development in ITP patients, all of whom were positive for the JAK2 V617F mutation. Here, we report the first published case of ITP following ET in the absence of other platelet disorders.

Patient Concerns: A 70-year-old woman with a five-year history of ET with JAK2 V617F mutation treated with hydroxycarbamide for five months presented with petechiae on her limbs.

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