Over the last decade, there have been numerous developments and changes in treatment practices for the management of patients with immune thrombocytopenia (ITP). This article is an update of the International Consensus Report published in 2010. A critical review was performed to identify all relevant articles published between 2009 and 2018. An expert panel screened, reviewed, and graded the studies and formulated the updated consensus recommendations based on the new data. The final document provides consensus recommendations on the diagnosis and management of ITP in adults, during pregnancy, and in children, as well as quality-of-life considerations.
The safety and efficacy of weekly rituximab 375 mg/m 2 (؋4), given within 3 days of acute TTP admission, with standard therapy (PEX and steroids) was evaluated. Clinical outcomes were compared to historical controls (n ؍ 40) who had not received rituximab. Within the trial group, 15 of 40 required ICU admission and 15% of all cases with the highest troponin T levels on admission were ventilated. Before the second rituximab infusion, 68% of cases had a platelet count > 50 ؋ 10 9 /L and 38% > 150 ؋ 10 9 /L. Fewer PEX were required in whites compared to nonwhite in the rituximab group (mean 14 vs 21, P ؍ .0095). Inpatient stay was reduced by 7 days in the non-ICU trial cases compared to historical controls (P ؍ .04), especially in whites, with a mean reduction of 7 days (P ؍ .05). Ten percent of trial cases relapsed, median, 27 months (17-31 months), compared to 57% in historical controls, median 18 months (3-60 months; P ؍ .0011).There were no excess infections or serious adverse events with rituximab. In conclusion, rituximab appears a safe and effective therapy. Inpatient stay and relapse are significantly reduced in the rituximab cohort. Rituximab should be considered in conjunction with standard therapy on acute presentation of TTP. This study was registered at www.clinicaltrials.gov as NCT009-3713. (Blood. 2011;118(7): 1746-1753)
and14 Manchester Royal Infirmary, Manchester, United Kingdom Key Points• In women presenting with an initial diagnosis of TTP during pregnancy, cTTP was more common than acquired TTP.• Active monitoring and management during pregnancy results in positive pregnancy outcomes.Pregnancy can precipitate thrombotic thrombocytopenic purpura (TTP). We present a prospective study of TTP cases from the United Kingdom Thrombotic Thrombocytopenic Purpura (UK TTP) Registry with clinical and laboratory data from the largest cohort of pregnancy-associated TTP and describe management through pregnancy, averting fetal loss and maternal complications. Thirty-five women presented with a first TTP episode during pregnancy: 23/47 with their first congenital TTP (cTTP) episode and 12/47 with acute acquired TTP in pregnancy. TTP presented primarily in the third trimester/ postpartum, but fetal loss was highest in the second trimester. Fetal loss occurred in 16/38 pregnancies before cTTP was diagnosed, but in none of the 15 subsequent managed pregnancies. Seventeen of 23 congenital cases had a missense mutation, C3178T, within exon 24 (R1060W). There were 8 novel mutations. In acquired TTP presentations, fetal loss occurred in 5/18 pregnancies and 2 terminations because of disease. We also present data on 12 women with a history of nonpregnancy-associated TTP: 18 subsequent pregnancies have been successfully managed, guided by ADAMTS13 levels. cTTP presents more frequently than acquired TTP during pregnancy and must be differentiated by ADAMTS13 analysis. Careful diagnosis, monitoring, and treatment in congenital and acquired TTP have assisted in excellent pregnancy outcomes. (Blood. 2014;124(2):211-219)
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