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Abdallah AM, Hafez H, Madney Y, Ahmed S, Yassin D, Salem S, Yousry R, Abdel-Azim H, Lehmann L, Elhaddad A. Predictive value of early molecular response to tyrosine kinase inhibitors in pediatric patients with chronic myeloid leukemia. Leuk Lymphoma 2024; 65:1024-1027. [PMID: 38513148 DOI: 10.1080/10428194.2024.2331625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/12/2024] [Indexed: 03/23/2024]
MESH Headings
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Protein Kinase Inhibitors/therapeutic use
- Protein Kinase Inhibitors/adverse effects
- Child
- Adolescent
- Treatment Outcome
- Female
- Prognosis
- Male
- Child, Preschool
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Tyrosine Kinase Inhibitors
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Affiliation(s)
- Aya M Abdallah
- Department of Pediatric Oncology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
| | - Hanafy Hafez
- Department of Pediatric Oncology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Youssef Madney
- Department of Pediatric Oncology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Sonia Ahmed
- Department of Pediatric Oncology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Dina Yassin
- Department of Clinical Pathology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Clinical Pathology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Sherine Salem
- Department of Clinical Pathology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Clinical Pathology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Rodina Yousry
- Department of Research, Children's Cancer Hospital (CCHE 57357), Cairo, Egypt
| | - Hisham Abdel-Azim
- Cancer Center, Children Hospital and Medical Center, Loma Linda University, Loma Linda, CA, USA
| | - Leslie Lehmann
- Pediatric Stem Cell Transplantation Unit, Dana Farber Cancer Institute, Boston, MA, USA
| | - Alaa Elhaddad
- Department of Pediatric Oncology, Children's Cancer Hospital Egypt (CCHE 57357), Cairo, Egypt
- Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
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Lee SJ, Lee J, Ahn A, Lee S, Hong Y, Lee GD, Song H, Song M, Shin S, Kim M, Kim Y. Analytical Performance Evaluation of a Digital Real-Time PCR for Quantifying Major BCR::ABL1 Transcripts. J Clin Lab Anal 2024; 38:e25034. [PMID: 38525919 PMCID: PMC11033343 DOI: 10.1002/jcla.25034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/09/2024] [Accepted: 03/09/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND Accurate quantification of the BCR::ABL1 transcripts is essential for measurable residual disease (MRD) monitoring in chronic myeloid leukemia (CML) after tyrosine kinase inhibitor (TKI) treatment. This study evaluated the newly developed digital real-time PCR method, Dr. PCR, as an alternative reverse transcription-PCR (qRT-PCR) for MRD detection. METHODS The performance of Dr. PCR was assessed using reference and clinical materials. Precision, linearity, and correlation with qRT-PCR were evaluated. MRD levels detected by Dr. PCR were compared with qRT-PCR, and practical advantages were investigated. RESULTS Dr. PCR detected MRD up to 0.0032%IS (MR4.5) with excellent precision and linearity and showed a strong correlation with qRT-PCR results. Notably, Dr. PCR identified higher levels of MRD in 12.7% (29/229) of patients than qRT-PCR, including six cases of MR4, which is a critical level for TKI discontinuation. Dr. PCR also allowed for sufficient ABL1 copies in all cases, while qRT-PCR necessitated multiple repeat tests in 3.5% (8/229) of cases. CONCLUSION Our study provides a body of evidence supporting the clinical application of Dr. PCR as a rapid and efficient method for assessing MRD in patients with CML under the current treatment regimen.
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Affiliation(s)
- Soo Jung Lee
- Department of Laboratory MedicineSeoul St. Mary's Hospital, College of Medicine, The Catholic University of KoreaSeoulKorea
| | - Jong‐Mi Lee
- Department of Laboratory MedicineSeoul St. Mary's Hospital, College of Medicine, The Catholic University of KoreaSeoulKorea
| | - Ari Ahn
- Department of Laboratory Medicine, Incheon St. Mary's Hospital, College of MedicineThe Catholic University of KoreaSeoulKorea
| | - Sung‐Eun Lee
- Department of Hematology, Catholic Hematology Hospital, Seoul St. Mary's Hospital, College of MedicineThe Catholic University of KoreaSeoulKorea
| | - Yuna Hong
- Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of MedicineThe Catholic University of KoreaSeoulKorea
- Department of Biomedicine & Health Sciences, Graduate SchoolThe Catholic University of KoreaSeoulKorea
| | - Gun Dong Lee
- Department of Laboratory MedicineSeoul St. Mary's Hospital, College of Medicine, The Catholic University of KoreaSeoulKorea
| | - Hyun‐Woo Song
- Bio Institute, Optolane Technologies Inc.PangyoSeong‐Nam‐SiKorea
| | - Min‐Sik Song
- Bio Institute, Optolane Technologies Inc.PangyoSeong‐Nam‐SiKorea
| | - Seung‐Shick Shin
- Bio Institute, Optolane Technologies Inc.PangyoSeong‐Nam‐SiKorea
| | - Myungshin Kim
- Department of Laboratory MedicineSeoul St. Mary's Hospital, College of Medicine, The Catholic University of KoreaSeoulKorea
- Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of MedicineThe Catholic University of KoreaSeoulKorea
| | - Yonggoo Kim
- Department of Laboratory MedicineSeoul St. Mary's Hospital, College of Medicine, The Catholic University of KoreaSeoulKorea
- Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of MedicineThe Catholic University of KoreaSeoulKorea
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Gao HL, Hao Y, Chen WM, Li LD, Wang X, Qin YZ, Jiang Q. [Comparison of BCR::ABL (P210) mRNA levels detected by dPCR and qPCR methods in patients with chronic myeloid leukemia]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2023; 44:906-910. [PMID: 38185519 PMCID: PMC10753264 DOI: 10.3760/cma.j.issn.0253-2727.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Indexed: 01/09/2024]
Abstract
Objective: To compare digital polymerase chain reaction (dPCR) and real-time quantitative PCR (qPCR) measurements of BCR::ABL (P210) mRNA expression in patients with chronic myeloid leukemia (CML) . Methods: In this non-interventional, cross-sectional study, BCR::ABL (P210) mRNA was simultaneously measured by dPCR and qPCR in peripheral blood samples collected from patients with CML who underwent tyrosine kinase inhibitor therapy and who achieved at least a complete cytogenetic response from September 2021 to February 2023 at Peking University People's Hospital. The difference, correlation, and agreement between the two methods were evaluated using the Wilcoxon signed-rank test, Spearman's correlation, and Bland-Altman analysis, respectively. Results: In total, 459 data pairs for BCR::ABL mRNA expression measured by dPCR and qPCR from 356 patients with CML were analyzed. There was a significant difference in BCR::ABL mRNA expression between the two methods (P<0.001). When analyzed by the depth of the molecular response (MR), a significant difference only existed for patients with ≥MR4.5 (P<0.001). No significant difference was observed for those who did not achieve a major MR (no MMR; P=0.922) or for those who achieved a major MR (MMR; P=0.723) or MR4 (P=0.099). There was a moderate correlation between the BCR::ABL mRNA expression between the two methods (r=0.761, P<0.001). However, the correlation gradually weakened or disappeared as the depth of the MR increased (no MMR: r=0.929, P<0.001; MMR: r=0.815, P<0.001; MR4: r=0.408, P<0.001; MR4.5: r=0.176, P=0.176). In addition, the agreement in BCR::ABL mRNA expression between the two methods in those with MR4.5 was weaker than other groups (no MMR: ▉= 0.042, P=0.846; MMR:▉=0.054, P=0.229; MR4:▉=-0.020, P=0.399; MR4.5:▉=-0.219, P<0.001) . Conclusions: dPCR is more accurate than qPCR for measuring BCR::ABL (P210) mRNA expression in patients with CML who achieve a stable deep MR.
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Affiliation(s)
- H L Gao
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - Y Hao
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - W M Chen
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - L D Li
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - X Wang
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - Y Z Qin
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - Q Jiang
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
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Park H, Kim HJ, Sohn SK, Baik Y, Kim D, Lee SY, Kong JH, Kim H, Shin DY, Ahn JS, Park J, Park S, Kim I. Effect of BCR::ABL1 transcript type and droplet digital polymerase chain reaction on successful treatment-free remission in chronic myeloid leukemia patients who discontinued tyrosine kinase inhibitor. Ther Adv Hematol 2023; 14:20406207231205637. [PMID: 37929079 PMCID: PMC10624046 DOI: 10.1177/20406207231205637] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 09/05/2023] [Indexed: 11/07/2023] Open
Abstract
Background Droplet digital polymerase chain reaction (ddPCR) is an exact method of measurement. Objectives We conducted this study to identify the prognostic factors for successful treatment-free remission in patients with chronic-phase chronic myeloid leukemia who discontinued tyrosine kinase inhibitors (TKIs). We also aimed to validate ddPCR for predicting molecular relapse. Design This is a prospective, multicenter study. Methods We enrolled patients treated with TKIs for at least 3 years with a confirmed sustained deep molecular response (DMR) for at least 1 year. TKI was re-administered in patients who experienced the loss of major molecular response (MMR). Results A total of 66 patients from five institutions in South Korea were enrolled. During a median follow-up period of 16.5 months, 29/66 (43.9%) patients experienced molecular relapse; the probability of molecular relapse-free survival (RFS) at 6 or 12 months after TKI discontinuation was 65.6% or 57.8%, respectively, with most molecular relapses occurring within the first 7 months. All patients who lost MMR were re-treated with TKI, and all re-achieved MMR at a median of 2.8 months. E14a2 transcript type (p = 0.005) and longer DMR duration (⩾48 months) prior to TKI discontinuation (p = 0.002) were associated with prolonged molecular RFS and with sustained DMR. Patients with both e13a2 transcript type and detectable BCR::ABL1 (⩾MR5.0) by ddPCR at the time of TKI discontinuation showed shorter duration of molecular RFS (p = 0.015). Conclusion Our data suggest that transcript type and BCR::ABL1 transcript levels on ddPCR should be taken into consideration when deciding whether to discontinue TKI therapy.
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Affiliation(s)
- Hyunkyung Park
- Department of Internal Medicine, Seoul National University–Seoul Metropolitan Government Boramae Medical Center, Seoul, South Korea
| | - Hyeong-Joon Kim
- Department of Internal Medicine, Chonnam National University, Hwasun Hospital, Hwasun, South Korea
| | - Sang-Kyun Sohn
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, South Korea
| | | | | | | | - Jee Hyun Kong
- Department of Internal Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Hawk Kim
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, South Korea
| | - Dong-Yeop Shin
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Jae-Sook Ahn
- Department of Internal Medicine, Chonnam National University, Hwasun Hospital, Hwasun, South Korea
| | - Jinny Park
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, South Korea
| | - Seonyang Park
- Department of Internal Medicine, Inje University, Haeundae Paik Hospital, Busan, South Korea
| | - Inho Kim
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul 03080, South Korea
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Yoo JW, Jo S, Ahn MB, Kim S, Lee JW, Kim M, Cho B, Chung NG. Front-Line Tyrosine Kinase Inhibitors in Pediatric Chronic Myeloid Leukemia: A Study on Efficacy and Safety. Cancers (Basel) 2023; 15:3862. [PMID: 37568679 PMCID: PMC10416896 DOI: 10.3390/cancers15153862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
We conducted a retrospective study on 51 pediatric patients with newly diagnosed chronic myeloid leukemia chronic phase or accelerated phase. The patients were classified into the IMA group (N = 33), treated with imatinib, and the DSA group (N = 18), treated with dasatinib, as front-line tyrosine kinase inhibitors (TKIs). At 12 months, the rates of complete cytogenetic response were similar between the IMA group (92.3%) and DSA group (100%) (p = 0.305). However, the rate of early molecular response was higher in the DSA group than in the IMA group (100.0% vs. 80.0%, p = 0.043). By 12 and 24 months, the DSA group showed faster and higher cumulative rates of both major (DSA group: 72.2% and 100%, respectively; IMA group: 41.2% and 68.7%, respectively; p = 0.002) and deep molecular responses (DSA group: 26.0% and 43.6%, respectively; IMA group: 13.8% and 17.5%, respectively; p = 0.004). Both TKIs were well tolerated. Although the height standard deviation scores decreased in both groups, the height decline was greater in the DSA group between one and two years from the start of TKI therapy. In this study, dasatinib achieved faster and higher molecular responses with an acceptable safety profile. Further follow-up is necessary to assess the long-term outcomes of TKI treatment in children.
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Affiliation(s)
- Jae Won Yoo
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Suejung Jo
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Moon Bae Ahn
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Seongkoo Kim
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Jae Wook Lee
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Myungshin Kim
- Catholic Genetic Laboratory Center, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
- Department of Laboratory Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Bin Cho
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
| | - Nack-Gyun Chung
- Department of Pediatrics, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.W.Y.); (S.J.); (S.K.); (J.W.L.); (B.C.)
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