Objective:To investigate the effect of IA10 regimen induction therapy on newly diagnosed adult acute myeloid leukemia (AML) patients without allogeneic hematopoietic stem cell transplantation (allo-HSCT) and the influencing factors of prognosis.Methods:The clinical data of 99 adult patients with newly diagnosed AML treated with IA10 regimen and without allo-HSCT in the Third Hospital of Yuncheng City in Shanxi Province from January 2007 to April 2017 were retrospectively analyzed. The baseline disease characteristics, relapse and survival status and minimal residual disease (MRD) levels were obtained. The influencing factors of prognosis were evaluated by Cox regression model.Results:All the 99 patients did not undergo allo-HSCT after achieved morphologic leukemia-free state (MLFS), the blood cells of 84 cases (84.8%) recovered to complete remission (CR) when reaching MLFS, 8 cases (8.1%) had CR with incomplete recovery of platelet count (CRp), 7 cases (7.1%) had CR with incomplete recovery of blood cell count (CRi). The median relapse time, median disease-free survival time, and median overall survival time were 35 months (6-54 months), 22 months (4-49 months) and 39 months (9-73 months). Multivariate analysis showed that FLT3-ITD was an independent risk factor for relapse, disease-free survival and overall survival in all patients and patients with consolidation therapy ≥1 course (all patients: HR=3.46, 95% CI 2.03-5.97, HR=2.49, 95% CI 1.40-5.47, HR=2.70, 95% CI 1.86-5.90; patients with consolidation therapy ≥1 course: HR=2.14, 95 CI 1.67-5.64, HR=2.63, 95 CI 1.54-5.03, HR=2.06, 95 CI 1.12-4.34; all P < 0.05); the high risk group of South West Oncology Group (SWOG) was an independent risk factor for relapse and disease-free survival in all patients ( HR=2.54, 95% CI 1.16-5.30; HR=2.57, 95% CI 1.38-5.10; both P < 0.05); CRi when achieving MLFS was an independent risk factor for disease-free survival and overall survival in all patients and patients with consolidation therapy ≥ 1 course (all patients: HR=5.71, 95% CI 2.66-11.03, HR=4.46, 95% CI 2.51-9.14; patients with consolidation therapy ≥ 1 course: HR=3.87, 95% CI 1.56-9.83, HR=4.67, 95% CI 2.33-11.59; all P < 0.05), and it was an independent risk factor for relapse in all patients ( HR=3.37, 95 CI 1.26-8.91, P < 0.01); the proportion of peripheral blood primitive cells ≥ 0.50 and the positive MRD after 1 course of consolidation therapy were the independent risk factors for relapse and disease-free survival in patients with consolidation therapy ≥ 1 course (proportion of peripheral blood primitive cells ≥ 0.50: HR=1.96, 95% CI 1.25-3.41, HR=1.56, 95% CI 1.02-2.94; positive MRD after 1 course of consolidation therapy: HR=2.21, 95% CI 1.37-4.05, HR=2.46, 95% CI 1.51-4.23; all P < 0.05). There were significant differences in cumulative relapse, disease-free survival and overall survival of patients without and with 1, 2 and 3 prognostic risk factors (all P < 0.05). Conclusions:IA10 regimen is effective in the induction therapy of newly diagnosed adult AML patients without allo-HSCT. The poor molecular genetic characteristics and CRi when achieving MLFS at the first diagnosis are risk factors for the prognosis of patients, and the high proportion of peripheral blood primitive cells, the combination of monokaryotype and positive MRD after 1 course of consolidation therapy are also closely related to the poor prognosis of patients.

To investigate the status and epidemiological characteristics of respiratory pathogens infections in children with influenza-like illnesses (ILI) in Beijing Children′s Hospital from 2022 to 2023. A dual amplification technique was used to detect nucleic acids of seven common respiratory pathogens, including influenza A virus (Flu A), influenza B virus (Flu B), mycoplasma pneumoniae (MP), respiratory syncytial virus (RSV), parainfluenza virus (PIV), adenovirus (ADV), and Chlamydia pneumoniae (CP), in outpatient and inpatient children (aged 0-18 years) with influenza-like symptoms who sought medical care at Beijing Children′s Hospital, from January 2022 to March 2023. A total of 43 663 children were included in the study, of which 27 903 tested positive for respiratory pathogens with a total detection rate of 63.91%. Flu A had the highest detection rate of 69.93% (27 332/39 084), followed by MP about 13.22% (380/2 875). The total detection rate of RSV, PIV and ADV was 7.69% (131/1 704). Flu B had a detection rate of 0.16% (64/39 084). No CP was detected in this study. A total of 7 cases of dual infections were detected, with a detection rate of 0.41% (7/1 704). The Chi-square test was used to analyze the differences in detection rates of pathogens among different genders, age groups, and different seasons. Among the seven pathogens, only Flu A had statistically significant differences in gender ( χ2=16.712, P<0.001). The detection rates of Flu A and MP showed an increasing trend with age (both P trend<0.001), while the detection rates of RSV and PIV showed a decreasing trend with age (both P trend<0.001). Flu A had its epidemic peak in winter and spring, with detection rates of 61.30% (3 907/6 374) and 77.47% (23 207/29 958) respectively; MP and PIV had higher detection rates in autumn (25.14% and 7.64% respectively); RSV showed a relatively higher detection rate in winter (8.69%); Flu B and ADV had lower detection rates throughout the study period (0.16% and 1.17% respectively). In conclusion, children with ILI in 2022-2023 were mainly infected with a single respiratory pathogen, and occasionally dual pathogen infections were observed. Among them, the detection rate of Flu A was the highest, and only Flu A showed a gender difference in detection rate. As the age of the children patients increased, the detection rate of Flu A and MP showed an increasing trend, while RSV and PIV showed a decreasing trend. The prevalence of Flu A, Flu B, MP, PIV, and RSV were seasonal.

To investigate the status and epidemiological characteristics of respiratory pathogens infections in children with influenza-like illnesses (ILI) in Beijing Children′s Hospital from 2022 to 2023. A dual amplification technique was used to detect nucleic acids of seven common respiratory pathogens, including influenza A virus (Flu A), influenza B virus (Flu B), mycoplasma pneumoniae (MP), respiratory syncytial virus (RSV), parainfluenza virus (PIV), adenovirus (ADV), and Chlamydia pneumoniae (CP), in outpatient and inpatient children (aged 0-18 years) with influenza-like symptoms who sought medical care at Beijing Children′s Hospital, from January 2022 to March 2023. A total of 43 663 children were included in the study, of which 27 903 tested positive for respiratory pathogens with a total detection rate of 63.91%. Flu A had the highest detection rate of 69.93% (27 332/39 084), followed by MP about 13.22% (380/2 875). The total detection rate of RSV, PIV and ADV was 7.69% (131/1 704). Flu B had a detection rate of 0.16% (64/39 084). No CP was detected in this study. A total of 7 cases of dual infections were detected, with a detection rate of 0.41% (7/1 704). The Chi-square test was used to analyze the differences in detection rates of pathogens among different genders, age groups, and different seasons. Among the seven pathogens, only Flu A had statistically significant differences in gender ( χ2=16.712, P<0.001). The detection rates of Flu A and MP showed an increasing trend with age (both P trend<0.001), while the detection rates of RSV and PIV showed a decreasing trend with age (both P trend<0.001). Flu A had its epidemic peak in winter and spring, with detection rates of 61.30% (3 907/6 374) and 77.47% (23 207/29 958) respectively; MP and PIV had higher detection rates in autumn (25.14% and 7.64% respectively); RSV showed a relatively higher detection rate in winter (8.69%); Flu B and ADV had lower detection rates throughout the study period (0.16% and 1.17% respectively). In conclusion, children with ILI in 2022-2023 were mainly infected with a single respiratory pathogen, and occasionally dual pathogen infections were observed. Among them, the detection rate of Flu A was the highest, and only Flu A showed a gender difference in detection rate. As the age of the children patients increased, the detection rate of Flu A and MP showed an increasing trend, while RSV and PIV showed a decreasing trend. The prevalence of Flu A, Flu B, MP, PIV, and RSV were seasonal.