Value of flow cytometry for MRD-based relapse prediction in B-cell precursor ALL in a multicenter setting

PCR of TCR/Ig gene rearrangements is considered the method of choice for minimal residual disease (MRD) quantification in BCP-ALL, but flow cytometry analysis of leukemia-associated immunophenotypes (FCM-MRD) is faster and biologically more informative. FCM-MRD performed in 18 laboratories across seven countries was used for risk stratification of 1487 patients with BCP-ALL enrolled in the NOPHO ALL2008 protocol. When no informative FCM-marker was available, risk stratification was based on real-time quantitative PCR. An informative FCM-marker was found in 96.2% and only two patients (0.14%) had non-informative FCM and non-informative PCR-markers. The overall 5-year event-free survival was 86.1% with a cumulative incidence of relapse (CIR5y) of 9.5%. FCM-MRD levels on days 15 (HzR 4.0, p 10(-4) associated with a CIR5y = 22.1%. In conclusion, FCM-MRD performed in a multicenter setting is a clinically useful method for MRD-based treatment stratification in BCP-ALL.Peer reviewe

Suitability of Who Criteria for Quality Assessment in Teenage Boys Undergoing Sperm Banking for Fertility Preservation Prior to Potentially Gonadotoxic Treatment

Background/Objectives: Children who are treated for childhood cancer are exposed to hospitalization, interaction with unfamiliar people in strange environments, and unpleasant, and sometimes, procedures. Having to wait for procedures is one of the worst situations, experienced by child patients. It is therefore important that hospitals provide environments that are non-stressful and safe for children in conjunction with procedures. Especially important, is the possibility for children who are hospitalized to sustain everyday activities, such as play, irrespective of their age and severity of illness. Objective: To assess differences in expenditure of time and dose of anesthetic drugs during sedation for intrathecal chemotherapy in two different environments- the children's ward, where the child was hospitalized, and the operation theatre. Design/Methods: The study is based on retrospective data from repeated treatment sessions recorded in operation planning programs and journals during 2011-2018 (n=164). Children of the ages 1-12 years (n=22) with varying number of treatments were included in the study. Data was analyzed with the Kruskal-Wallis test and post-hoc analyses included the Mann-Whitney Test with Bonferroni correction. Results: The time from the start of the procedure until the start of sedation was significantly lower at the children's ward, which was also the case if including the waiting time before the start of the procedure. No significant differences could be found regarding the dose of anesthetic drugs used. Conclusions: Sedation for intrathecal chemotherapy at the children's ward provides care to a higher extent in accordance with the needs of the child, by reducing the time for the procedure and thus the interference with the child’s everyday life at the hospital. © 2019 Wiley Periodicals, Inc

A clinical prediction score for transient versus persistent childhood immune thrombocytopenia

Background Childhood immune thrombocytopenia (ITP) is an autoimmune bleeding disorder. The prognosis (transient, persistent, or chronic ITP) remains difficult to predict. The morbidity is most pronounced in children with persistent and chronic ITP. Clinical characteristics are associated with ITP outcomes, but there are no validated multivariate prediction models.Objective Development and external validatation of the Childhood ITP Recovery Score to predict transient versus persistent ITP in children with newly diagnosed ITP.Methods Patients with a diagnosis platelet count = 100 x 10(9)/L 3 months after diagnosis) versus persistent ITP. Age, sex, mucosal bleeding, preceding infection/vaccination, insidious onset, and diagnosis platelet count were used as predictors.Results In external validation, the score predicted transient versus persistent ITP at 3 months follow-up with an area under the receiver operating characteristic curve of 0.71. In patients predicted to have a high chance of recovery, we observed 85%, 90%, and 95% recovered 3, 6, and 12 months after the diagnosis. For patients predicted to have a low chance of recovery, this was 32%, 46%, and 71%. The score also predicted cessation of bleeding symptoms and the response to intravenous immunoglobulins (IVIg).Conclusion The Childhood ITP Recovery Score predicts prognosis and may be useful to individualize clinical management. In future research, the additional predictive value of biomarkers can be compared to this score. A risk calculator is available ().Clinical epidemiolog

Correction: Simulation-based multiprofessional obstetric anaesthesia training conducted in situ versus off-site leads to similar individual and team outcomes:a randomised educational trial

[This corrects the article DOI: 10.1136/bmjopen-2015-008344.][This corrects the article DOI: 10.1136/bmjopen-2015-008344.]