Current Status of Flow Cytometric Immunophenotyping of Hematolymphoid Neoplasms in Korea
- Author:
Mikyoung PARK
1
;
Jihyang LIM
;
Ari AHN
;
Eun-Jee OH
;
Jaewoo SONG
;
Kyeong-Hee KIM
;
Jin-Yeong HAN
;
Hyun-Woo CHOI
;
Joo-Heon PARK
;
Kyung-Hwa SHIN
;
Hyerim KIM
;
Miyoung KIM
;
Sang-Hyun HWANG
;
Hyun-Young KIM
;
Duck CHO
;
Eun-Suk KANG
Author Information
- Publication Type:Original Article
- From:Annals of Laboratory Medicine 2024;44(3):222-234
- CountryRepublic of Korea
- Language:EN
-
Abstract:
Background:Flow cytometric immunophenotyping of hematolymphoid neoplasms (FCIHLN) is essential for diagnosis, classification, and minimal residual disease (MRD) monitoring. FCI-HLN is typically performed using in-house protocols, raising the need for standardization. Therefore, we surveyed the current status of FCI-HLN in Korea to obtain fundamental data for quality improvement and standardization.
Methods:Eight university hospitals actively conducting FCI-HLN participated in our survey.We analyzed responses to a questionnaire that included inquiries regarding test items, reagent antibodies (RAs), fluorophores, sample amounts (SAs), reagent antibody amounts (RAAs), acquisition cell number (ACN), isotype control (IC) usage, positiveegative criteria, and reporting.
Results:Most hospitals used acute HLN, chronic HLN, plasma cell neoplasm (PCN), and MRD panels. The numbers of RAs were heterogeneous, with a maximum of 32, 26, 12, 14, and 10 antibodies used for acute HLN, chronic HLN, PCN, ALL-MRD, and multiple myeloma-MRD, respectively. The number of fluorophores ranged from 4 to 10. RAs, SAs, RAAs, and ACN were diverse. Most hospitals used a positive criterion of 20%, whereas one used 10% for acute and chronic HLN panels. Five hospitals used ICs for the negative criterion. Positiveegative assignments, percentages, and general opinions were commonly reported. In MRD reporting, the limit of detection and lower limit of quantification were included.
Conclusions:This is the first comprehensive study on the current status of FCI-HLN in Korea, confirming the high heterogeneity and complexity of FCI-HLN practices. Standardization of FCI-HLN is urgently needed. The findings provide a reference for establishing standard FCI-HLN guidelines.
