Cancer Research and Treatment

Hematologic malignancy

Pegfilgrastim Prophylaxis Is Effective in the Prevention of Febrile Neutropenia and Reduces Mortality in Patients Aged ≥ 75 Years with Diffuse Large B-Cell Lymphoma Treated with R-CHOP: A Prospective Cohort Study: Seong Hyun Jeong, Seok Jin Kim, Dok Hyun Yoon, Yong Park, Hye Jin Kang, Youngil Koh, Gyeong-Won Lee, Won-Sik Lee, Deok-Hwan Yang, Young Rok Do, Min Kyoung Kim, Kwai Han Yoo, Yoon Seok Choi, Hwan Jung Yun, Jun Ho Yi, Jae-Cheol Jo, Hyeon-Seok Eom, Jae-Yong Kwak, Ho-Jin Shin, Byeong Bae Park, Shin Young Hyun, Seong Yoon Yi, Ji-Hyun Kwon, Sung Yong Oh, Hyo Jung Kim, Byeong Seok Sohn, Jong Ho Won, Se-Hyung Kim, Ho-Sup Lee, Cheolwon Suh, Won Seog Kim; Cancer Res Treat. 2022;54(4):1268-1277. Published online December 30, 2021; DOI: https://doi.org/10.4143/crt.2021.1168

Abstract PDF Supplementary Material PubReader ePub: Purpose
Febrile neutropenia (FN) can cause suboptimal treatment and treatment-related mortality (TRM) in diffuse large B-cell lymphoma (DLBCL) patients treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (R-CHOP).
Materials and methods
We conducted a prospective cohort study to evaluate the effectiveness of pegfilgrastim prophylaxis in DLBCL patients receiving R-CHOP, and we compared them with the PROCESS cohort (n=485).
Results
Since January 2015, 986 patients with DLBCL were enrolled. Pegfilgrastim was administered at least once in 930 patients (94.3%), covering 90.3% of all cycles. FN developed in 137 patients (13.9%) in this cohort (23.7% in the PROCESS cohort, p<0.001), and 4.2% of all cycles (10.2% in the PROCESS cohort, p<0.001). Dose delay was less common (≥3 days: 18.1% vs. 23.7%, p=0.015; ≥5 days: 12.0% vs. 18.3%, p=0.023) in this cohort than in the PROCESS cohort. The incidence of TRM (3.2% vs. 5.6%, p=0.047) and infection-related death (1.8% vs. 4.5%, p=0.004) was lower in this cohort than in the PROCESS cohort. The 4-year overall survival (OS) and progression-free survival (PFS) rates of the two cohorts were not different (OS: 73.0% vs. 71.9%, p=0.545; PFS: 69.5% vs. 68.8%, p=0.616). However, in patients aged ≥75 years, the 4-year OS and PFS rates were higher in this cohort than in the PROCESS cohort (OS: 49.6% vs. 33.7%, p=0.032; PFS: 44.2% vs. 30.3% p=0.047).
Conclusion
Pegfilgrastim prophylaxis is effective in the prevention of FN and infection-related death in DLBCL patients receiving R-CHOP, and it also improves OS in patients aged ≥75 years.

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Effects of cancer nervous System Irradiation on Neuropsychologic Functioning in Long - term Survivors of Childhood Acute Lymphoblastic Leukemia: Ji Eun Choi, Hee Young Shin, In One Kim, Kyung Mo Yeon, In Young Chae, Soo Churl Cho, Yong Seung Hwang, Hyo Seop Ahn; J Korean Cancer Assoc. 1995;27(2):303-316.

Abstract PDF: Long-term adverse neuropsychologic sequelae are frequently observed in pediatric patients treated for acute lymphoblastic leukemia(ALL). In this study, 10 children in continuous com- plete remission from ALL were given tests of IQ, neuropsychologic assessment, waking EEG, brain MRI to assess neuropsychologic functioning minimum 2 years after CNS prophylaxis. All children were free of CNS disease at diagnosis and had received CNS prophylactic treatment with 1,800 cGy cranial irradiation plus intrathecal methotrexate. Male patients had a significant decline in coding compared with female patients(P<0.01) and those evaluated beyond age of 10-year-old had a greater decline in performance IQ compared with those evaluated under age of 10-year-old(P<0.01). One of the 10 children(10%) showed white matter changes on MRI attributable to therapy. All children had no significant lower mean IQ, but lower achievement with regard to arithmetic skills, picture arrangement than other tests. We conclude that prophylactic CNS therapy may cause cognitive dysfunctions and the white matter changes but its value and significance during follow-up should be assessed in well designed longitudinal research studies.

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cDNA Sequencing of the Sh Region of Phospholipase C-γ1 from Human Cervix Carcinomas Using RT-PCR: Yee Sook Cho, Yong Ki Baek, Young Min Song, Byung Chan Oh, Uh Hyun Kim; J Korean Cancer Assoc. 1995;27(2):316-322.

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