27 research outputs found

    Postazacitidine clone size predicts long-term outcome of patients with myelodysplastic syndromes and related myeloid neoplasms

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    Azacitidine is a mainstay of therapy for MDS-related diseases. The purpose of our study is to elucidate the effect of gene mutations on hematological response and overall survival (OS), particularly focusing on their post-treatment clone size. We enrolled a total of 449 patients with MDS or related myeloid neoplasms. They were analyzed for gene mutations in pre- (n=449) and post- (n=289) treatment bone marrow samples using targeted-capture sequencing to assess the impact of gene mutations and their post-treatment clone size on treatment outcomes. In Cox proportional hazard modeling, multi-hit TP53 mutation (HR, 2.03; 95% CI, 1.42-2.91; P<.001), EZH2 mutation (HR, 1.71; 95% CI, 1.14-2.54; P=.009), and DDX41 mutations (HR, 0.33; 95% CI, 0.17-0.62; P<.001), together with age, high-risk karyotypes, low platelet, and high blast counts, independently predicted OS. Post-treatment clone size accounting for all drivers significantly correlated with International Working Group (IWG)-response (P<.001, trend test), except for that of DDX41-mutated clones, which did not predict IWG-response. Combined, IWG-response and post-treatment clone size further improved the prediction of the original model and even that of a recently proposed molecular prediction model, IPSS-M (c-index, 0.653 vs 0.688; P<.001, likelihood ratio test). In conclusion, evaluation of post-treatment clone size, together with pre-treatment mutational profile as well as IWG-response have a role in better prognostication of azacitidine-treated myelodysplasia patients

    BMPR2 gene mutation in pulmonary arteriovenous malformation and pulmonary hypertension: a case report.

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    The transforming growth factor-β superfamily signaling pathway is thought to be involved in the pathogenesis of pulmonary arteriovenous malformation (PAVM). However, the association between bone morphogenetic protein receptor type 2 (BMPR2) gene mutations and PAVM remains unclear. We present a case of concurrent PAVM and pulmonary arterial hypertension (PAH), with a deletion mutation in exon 6 and exon 7 of the BMPR2 gene. Drug treatment for PAH improved the patient's hemodynamics and exercise capacity, but worsened oxygenation. This case suggests that BMPR2 gene mutation may be associated with the complex presentation of PAVM combined with PAH

    An Early Intensive Intervention for Inducing Inactive Asthma in Adults —A One-Year Follow-Up Observation Study—

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    Background: Treatment strategy that reduces dependence on long-term medication for chronic asthma is preferable. The purpose of the study is to investigate the efficacy of an early intensive intervention for inducing inactive asthma in adults and identify factors that affect the efficacy. Methods: A prospective study was conducted on subjects who had asthma for two years or less. An intensive intervention consisting of systemic corticosteroid treatment for two weeks followed by inhaled corticosteroid for further 16 weeks with concomitant administration of bronchodilator(s) was administrated on 109 subjects. As a control group, 33 subjects were treated according to the current asthma treatment guidelines for 18 weeks. The primary outcome of the intervention was assessed with symptomatology and use of medication during 12 months after the cessation of treatment period. Results: At one year after the intervention, significantly more patients in the intensive intervention group (41%) than in the control group (24%) had no respiratory symptoms and were medication-free or had experienced minor upper respiratory symptoms (inactive asthma) (P = 0.01). The intensive intervention maintained a significant factor associated with one-year inactive asthma (adjusted odds ratio: 3.61, 95% confidence interval: 1.2010.84; P = 0.02). Infection as onset cause, asthma duration and pre-treatment %FEV1.0 were also identified independently associated with inactive asthma. As the limitation, the study was not randomized trial. Conclusions: Intensive therapy in the early stage is very likely to contribute to increasing one-year asthma inactivity, which may reduce patients' dependence on long-term management by medical treatment
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