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Wang WJ, Zheng CF, Liu Z, Tan YH, Chen XH, Zhao BL, Li GX, Xu ZF, Ren FG, Zhang YF, Chang JM, Wang HW. Droplet digital PCR for BCR/ABL(P210) detection of chronic myeloid leukemia: A high sensitive method of the minimal residual disease and disease progression. Eur J Haematol 2018; 101:291-296. [PMID: 29691899 DOI: 10.1111/ejh.13084] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVE This study intended to establish a droplet digital PCR (dd-PCR) for monitoring minimal residual disease (MRD) in patients with BCR/ABL (P210)-positive chronic myeloid leukemia (CML), thereby achieving deep-level monitoring of tumor load and determining the efficacy for guided clinically individualized treatment. METHODS Using dd-PCR and RT-qPCR, two cell suspensions were obtained from K562 cells and normal peripheral blood mononuclear cells by gradient dilution and were measured at the cellular level. At peripheral blood (PB) level, 61 cases with CML-chronic phase (CML-CP) were obtained after tyrosine kinase inhibitor (TKI) treatment and regular follow-ups. By RT-qPCR, BCR/ABL (P210) fusion gene was undetectable in PB after three successive analyses, which were performed once every 3 months. At the same time, dd-PCR was performed simultaneously with the last equal amount of cDNA. Ten CML patients with MR4.5 were followed up by the two methods. RESULTS At the cellular level, consistency of results of dd-PCR and RT-qPCR reached R2 ≥ 0.99, with conversion equation of Y = 33.148X1.222 (Y: dd-PCR results; X: RT-qPCR results). In the dd-PCR test, 11 of the 61 patients with CML (18.03%) tested positive and showed statistically significant difference (P < .01). In the follow-up of 10 CML patients who were in MR4.5. All patients were loss of MR4.0, and 4 were tested positive by dd-PCR 3 months earlier than by RT-qPCR. CONCLUSION In contrast with RT-qPCR, dd-PCR is more sensitive, thus enabling accurate conversion of dd-PCR results into internationally standard RT-qPCR results by conversion equation, to achieve a deeper molecular biology-based stratification of BCR/ABL(P210) MRD. It has some reference value to monitor disease progression in clinic.
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Affiliation(s)
- Wen-Jun Wang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Chao-Feng Zheng
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhuang Liu
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yan-Hong Tan
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiu-Hua Chen
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Bin-Liang Zhao
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Guo-Xia Li
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhi-Fang Xu
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Fang-Gang Ren
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yao-Fang Zhang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jian-Mei Chang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Hong-Wei Wang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
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Tang Y, Wei X, Chen J, Du Y, Chu H, Mao L, Chen J, Xu Q, Tang J, Shen S, Mao M. Absolute quantification of BCR-ABL1 fusion transcripts in pediatric chronic myeloid leukemia. Leuk Lymphoma 2016; 57:2216-8. [PMID: 27095369 DOI: 10.3109/10428194.2015.1131272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Yanjing Tang
- a Department of Hematology and Oncology , Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Xiaoyuan Wei
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
| | - Jing Chen
- a Department of Hematology and Oncology , Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Yunzhi Du
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
| | - Huiling Chu
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
| | - Louise Mao
- c Department of Cognitive Science, University of California Berkeley , Berkeley , CA , USA
| | - Jun Chen
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
| | - Qing Xu
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
| | - Jingyan Tang
- a Department of Hematology and Oncology , Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Shuhong Shen
- a Department of Hematology and Oncology , Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Mao Mao
- b Translational Bioscience and Diagnostics, WuXi AppTec Co., Ltd. , Waigaoqiao Free Trade Zone , Shanghai , China
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