Objectives:
BCR-ABL1
fusion transcripts with contrasting data on response to imatinib therapy have been reported from different parts of the world. Hence, the present study aimed to determine the frequencies of transcripts and their association with response to imatinib therapy in chronic myeloid leukemia (CML) patients.
Methods:
A total of 170 (76 follow-up and 94 imatinib-resistant) CML samples were included in the study.
BCR-ABL1
fusion transcripts and expression status were analyzed in all cases using multiplex reverse transcriptase PCyR and real-time PCyR. Sanger sequencing was used for tyrosine kinase domain (TKD) mutation screening in imatinib mesylate-resistant patients.
Results:
Of 170 CML patients, 36.36% showed b2a2, 63.53% had b3a2, and 2.94% had b2a2 + b3a2 isoforms. Mean platelet counts and blasts were significantly lower in b2a2 carriers (
P
= 0.0092;
P
≤ 0.0001). Patients with b2a2 transcript were found to be more in responders group (both hematological and cytogenetic), whereas b3a2 patients were more in partial responders group and death (
P
= 0.763; P = 0.309). In follow-up patients, mean baseline
BCR-ABL1
expression levels are significantly higher in b2a2 versus b3a2 carriers (
P
= 0.0351). Of 94 imatinib-resistant patients, 36 (38.29%) had acquired TKD mutations. Among 36 patients, mean
BCR-ABL1
levels are significantly higher in b2a2 and b2a2 + b3a2 group (
P
= 0.0002;
P
≤ 0.0001). TKD mutation frequency was more in b3a2 (61.11%) compared to other types. With respect to follow-up status in 36 patients, 17 patients died while 19 were on imatinib higher doses or 2nd-generation tyrosine kinase inhibitors. Of 17 patients, 41.66% had b2a2 transcript and 54.54% had b3a2 transcript. Conclusion: Patients with b3a2 transcripts might be associated with poor response and worse prognosis in CML with imatinib treatment.
This year, on February 4, we celebrated World Cancer Day, highlighting the theme Close the Care Gap. Experts in both low-and middle-income countries (LMICs) and high-income countries (HICs) accept the fact that considerable work still needs to be done toward optimizing cancer prevention and treatment.The paper on Management of advanced cervical cancers by Pang et al 1 presents us with what we have achieved and what we need to do as the global oncology community. The authors have very well highlighted the epidemiology, treatment, and survivorship issues of advanced cervical cancer in the United States. In this commentary, we would like to touch upon the gaps of care that exist in LMICs and their global implications.
Introduction:Desisting from disease directed treatment in the past weeks of life is a quality criterion in oncology service. Patients with advanced cancer have unrealistic expectations from chemotherapy and hold on to it as a great source of hope. Many oncologists continue futile and unnecessary treatments, instead of conveying to the patients the lack of benefit, resulting in delayed referral for palliative care (PC).Materials and Methods:This is a retrospective analysis of case records from June 2014 to December 2015. The primary objective was to study, how far back in time terminally ill cancer patients received definitive cancer directed therapy (DCDT). Apart from patient demographics, the diagnosis, stage, and details of DCDT, and death were captured. PC referral data were recorded. DCDT to death was taken as treatment-free interval (TFI). Analysis was performed using IBM SPSS Statistics for Windows, Version 20.Results:A total of 292 case records were evaluated. Seventy-three had inadequate treatment details. Hence, 219 records were analyzed. PC referral was done in 78.5% of patients. Only best supportive care (BSC) without any DCDT was given in 27 patients. The most common reason for BSC was a poor performance status in 92.5%. The median time from PC referral till death was 43.5 days (range: 1–518 days). Chemotherapy was the most common DCDT in 52.9% of patients. The median time from DCDT and death was 49 days (range: 0–359 days). Cervical and ovarian cancers patients had the longest TFI; shortest in unknown primary. Most patients died at home (70.4%). Patients receiving PC preferred home or hospice as place of death. Of the 80 patients given hospice care, 39 (36.5%) died in the hospice.Conclusion:While DCDT needs to be started at the right time, it should also be discontinued when futile. Early involvement of the PC team, even while patients are on DCDT makes the transition smoother and more meaningful.
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