Development of a Next-generation Sequencing-based Gene Panel Test to Detect Measurable Residual Disease in Acute Myeloid Leukemia

Background@#AML is a heterogeneous disease, and despite intensive therapy, recurrence is still high in AML patients who achieve the criterion for cytomorphologic remission (residual tumor burden [measurable residual disease, MRD]0.99). The test reproducibly detected MRD in three dilution series samples, with a sensitivity of 0.25% for single-nucleotide variants. More than half of samples from patients with morphologic remission after one month of chemotherapy had detectable mutations. NGS-MRD positivity for samples collected after one month of chemotherapy tended to be associated with poor overall survival and progression-free survival. @*Conclusions@#Our highly sensitive and accurate NGS-MRD panel can be readily used to monitor most AML patients in clinical practice, including patients without gene rearrangement. In addition, this NGS-MRD panel may allow the detection of newly emerging clones during clinical relapse, leading to more reliable prognoses of AML.

Effect of School-Based Social Skills Training Program on Peer Relationships: Preliminary Study

OBJECTIVES: The aim of this study was to evaluate the effect of a school-based social skills training program on peer relationships in children and adolescents and to assess the plan for effective school-based mental health services. METHODS: The Child and Adolescent Mental Health Promotion Team of Bugok National Hospital conducted 7-sessioned school-based social skills training for elementary and middle school students (n=90). Changes in peer relationships were evaluated before and after application of the program using a name generator question. RESULTS: The social skills training program increased peer relations, indicating significant changes in social network indices. CONCLUSION: The social skills training program positively influenced peer relationships. The school-based social skills training program can be expected to have positive effects on school-based mental health services. Future investigation is needed to validate the long term effects of this program.

A Comparative Study of Helicobacter pylori Growth on Different Agar-based Media

BACKGROUND/AIMS: Optimal culture conditions for Helicobacter pylori have not been established. We compared the effectiveness of four different agar-based media for the growth of H. pylori. MATERIALS AND METHODS: G27, ATCC #43504 and 60190, and primary cultured strains were used. H. pylori strains were cultured for four days under four culture conditions: chocolate agar, Thayer-Martin (TM) agar containing vancomycin-colistin-nystatin inhibitor (VCNI), Brucella agar, and brain heart infusion (BHI) agar containing 5% horse blood and IsoVitaleX (BBL™ BD, USA). Culture of cells in each medium was repeated fourteen times. The growth of H. pylori was measured by using a spectrophotometer. RESULTS: TM, Brucella, and BHI agars showed mean absorbance values of 0.099, 0.059, 1.410, and 0.913, respectively. These values were significantly different (P=0.030). After post-adjustment by Bonferroni correction, similar growth was noted for in chocolate, Brucella, and BHI agars; however, TM agar significantly suppressed H. pylori growth compared with Brucella agar (P=0.031). CONCLUSIONS: Chocolate, Brucella, and BHI agars provided effective culture conditions for the growth of H. pylori. TM agar containing VCNI suppressed the growth of H. pylori and other organisms.

Effects of School-Based Social Skills Training Program on Alexithymic Tendency: Preliminary Study

OBJECTIVES: The purposes of this study are to evaluate the effect of a school-based social skills training program on the emotional regulation of children and adolescents and to assess the plan for effective school-based mental health services. METHODS: The Child and Adolescent Mental health promotion team of Bugok National Hospital conducted school-based social skills training (N=90, 7 sessions) for elementary and middle school students. Evaluations were conducted before and after the application of the program using a prosocial behavior questionnaire, a cohesiveness questionnaire, the Korean version of the 20-item Toronto Alexithymia Scale, a self-esteem scale, and the Novaco anger scale, in order to identify any changes. RESULTS: The social skills training program increased the prosocial behavior and cohesiveness of the children and adolescents and decreased their alexithymic tendency and degree of anger, but did not significantly change their self-esteem. CONCLUSION: The social skills training program positively influences the emotional and behavioral levels of children and adolescents. The emotional regulation program based on a social skills training program is expected to have positive results in school-based mental health services. Future investigations are needed to validate the long term effects of this program.