24 research outputs found

    The 5, 10 methylenetetrahydrofolate reductase C677T mutation and risk of fetal loss: a case series and review of the literature

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    <p>Abstract</p> <p>Background</p> <p>The true relationship between methylenetetrahydrofolate reductase C677T homozygosity and risk of recurrent spontaneous abortion is unknown, and it is unclear if women with these mutations should be anticoagulated during pregnancy.</p> <p>Objectives</p> <p>We report a series of 8 patients with this issue and review the current literature.</p> <p>Methods</p> <p>8 patients (3 of whom were actively pregnant) were referred with histories of spontaneous fetal loss; hypercoaguability work-ups revealed each were homozygous for the MTHFR C677T mutation without other thrombophilias.</p> <p>Results</p> <p>In the 3 women who have conceived, treatment with LMW heparin during pregnancy led to two full-term births and one additional pregnancy without complication. For the 5 who have not, we recommended treatment with LMW heparin upon conception.</p> <p>Conclusion</p> <p>We provide evidence to support the relationship between MTHFR C677T mutations and recurrent fetal loss, and to suggest that anticoagulation of these patients during pregnancy can lead to a successful pregnancy outcome.</p

    Treatment patterns and blood counts in patients with polycythemia vera treated with hydroxyurea in the United States: An analysis from the REVEAL study

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    BACKGROUND: Polycythemia vera (PV) is associated with increased blood cell counts, risk of thrombosis, and symptoms including fatigue and pruritus. National guidelines support the use of hydroxyurea (HU) in high-risk patients or those with some other clinical indication for cytoreduction. PATIENTS AND METHODS: REVEAL is a prospective, observational study designed to collect data pertaining to demographics, disease burden, clinical management, patient-reported outcomes, and health care resource utilization of patients with PV in the United States. In this analysis, HU treatment patterns and outcomes were assessed from 6 months prior to enrollment to the time of discontinuation, death, or data cutoff. RESULTS: Of the 1381 patients who received HU for ≥ 3 months, the median HU exposure was 23.6 months (range, 3.1-38.5 months). The most common maximum daily HU doses were 1000 mg (30.6%) and 500 mg (30.1%); only 6.4% received ≥ 2 g/d HU. Approximately one-third (32.3%) of patients had dose adjustments, 23.8% had dose interruptions, and 257 (18.6%) discontinued HU. The most common reasons for HU discontinuations and interruptions were adverse events/intolerance (37.1% and 54.5%, respectively) and lack of efficacy (35.5% and 22.1%, respectively). Of those who received HU for ≥ 3 months, 57.1% had hematocrit values \u3e 45% on ≥ 1 occasion, 33.1% continued to receive phlebotomies, and 27.4% had uncontrolled myeloproliferation. CONCLUSION: The results of this analysis emphasize the need for active management of patients with PV with appropriate HU dose titration to maintain blood count control while monitoring for signs and symptoms of HU intolerance

    Rate of bleeding-related episodes in elderly patients with primary immune thrombocytopenia: a retrospective cohort study

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    <p><b>Objective:</b> Immune thrombocytopenia (ITP) is characterized by low platelet counts and a tendency toward increased bleeding and bruising. We aimed to describe bleeding frequency and use of rescue ITP therapy to treat or prevent bleeding in elderly ITP patients in a real-world setting.</p> <p><b>Methods:</b> Using Medicare 20% sample data, 2007–2012, we identified elderly (ages ≥67 years) Medicare fee-for-service enrollees diagnosed with primary ITP between 1 January 2009 and 30 September 2012. Bleeding-related episodes (BREs) were defined as ≥1 bleeding event or use of ITP therapies commonly considered for rescue or emergency therapy. BRE rates were examined for the cohort overall, by time since ITP onset, and by splenectomy status. Patients were followed from ITP onset until the earliest of death, disenrollment from fee-for-service coverage, or 31 December 2012.</p> <p><b>Results:</b> We identified 3007 elderly patients diagnosed with primary ITP (mean [SD] age: 79.6 [7.5] years; 55% female); 2178 (72%) experienced at least one BRE (8867 BREs); 92 (3%) underwent splenectomy. Nearly half of BREs were defined by rescue therapy use alone. The overall rate was 1.72 BREs per patient-year (95% CI; 1.68–1.75); rates were higher during the first 3 months after ITP onset and after splenectomy.</p> <p><b>Conclusion:</b> Elderly ITP patients experienced about two BREs per patient-year after ITP onset. Most patients experienced at least one BRE. These real-world results demonstrate the importance of examining both bleeding and use of rescue or emergency ITP therapy in the assessment of disease burden in elderly patients with ITP.</p
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