The rare inherited coagulation factor deficiencies (deficiencies of factors I, II, V, VII, XI, XIII, combined FV + FVII deficiency, combined deficiency of the vitamin K dependent factors and von Willebrand disease type 3) have an aggregate prevalence of approximately 1:100,000. They may cause recurrent life or function threatening haemorrhage. In this article we review the available literature on long-term prophylaxis and, where possible, make recommendations on this important area.
Severe factor X deficiency (<0.01 IU mL(-1)) is a rare disorder producing a major bleeding tendency including umbilical cord, joint and intracranial haemorrhage. We present the first case of a child homozygous for a g.1177T > C missense alteration, predicted to disrupt the catalytic domain, and resulting in severe FX deficiency. The child suffered intracranial haemorrhage and now receives regular prophylaxis with a prothrombin complex concentrate. Our experience and a review of the literature suggest that optimal frequency of dosing is likely to be two or three times weekly and that the risk of thrombosis is very small.
Ten percent to 20% of patients with Hodgkin Lymphoma (HL) are refractory to first-line therapy or relapse. Existing salvage regimens have response rates of 60-85%, considerable toxicity and frequent treatment delay or dose reduction. We report a gemcitabine, cisplatin, and dexamethasone regimen (GemCis) with intensive growth factor and platelet support and no treatment delay. Seventeen patients with relapsed or refractory biopsy proven HL were treated. Toxicity, transfusion requirement, stem cell harvesting and engraftment data were collected. Response assessment was by computed tomography and positron emission tomography. Overall and complete response rates were high (94% and 65%, respectively). There were no episodes of febrile neutropenia, treatment delays or hospital admissions. All 15 patients intended for autograft were successfully harvested. All engrafted successfully with a median time for the entire group to neutrophil engraftment of 14 days. With a median followup of 22 months, the median survival has not yet been reached, and the estimated 2-year survival is 88%. GemCis is a well-tolerated outpatient regimen for relapsed/ refractory Hodgkin lymphoma which does not inhibit stem cell mobilisation, gives excellent response rates and compares favourably with previously published salvage regimens using these or other chemotherapy agents.
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