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Treatment Outcomes in Advanced Biliary Tract Cancers: Single Institution Retrospective Analysis

CC BY 4.0 · Indian J Med Paediatr Oncol 2025; 46(04): 370-376

DOI: DOI: 10.1055/s-0044-1787750

Author : Nikhil Pathi , Senthil J. Rajappa , Santa Ayyagari , M V. T. Krishna Mohan , Pavan Kumar , Rakesh Pinninti , Pallavi Ladda , Sanath Kandem , Rohan Tewani , Kinjal Shah , Kripa Bajaj , Sree Rama Krishnaiah , Divya Gandrala

Abstract

Purpose Biliary tract cancers (BTCs), particularly gallbladder cancers (GBCs), are prevalent in India. Yet there are limited data on treatment outcomes. To bridge this gap, we performed an analysis of advanced BTC treatment outcomes at our institute, seeking to offer insights into real-world scenario.

Materials and Methods This is a retrospective study comprising advanced BTC patients treated at our institute from January 2015 to March 2023. We assessed demographics, treatment approaches, progression-free survival (PFS), overall survival (OS), and associated toxicities.

Results Of the 411 patients analyzed, the majority were GBC (67.3%, n = 277), while the rest were cholangiocarcinoma (CCA) (32.6%, n = 134). The median age of study population was 56 years. Palliative chemotherapy was administered in 85% (n = 349) of all patients. Gemcitabine–cisplatin doublet was the most commonly used chemotherapy regimen (80.2%, n = 280). Platinum doublets yielded higher response rates compared with single-agent/nonplatinum chemotherapy (60 vs. 30%, n = 133). The median PFS was 4 months. The median OS was 8 months with platinum doublets and 5 months with single-agent/nonplatinum chemotherapy (hazard ratio [HR]: 0.60, 95% confidence interval: [CI] 0.43–0.84, p = 0.0001). OS was no different based on the type of platinum agent used. Patients receiving multiple lines of treatment lived longer compared with those who received single line only (14 vs. 6 months, respectively, HR: 0.36, 95% CI: 0.28–0.45, p < 0.0001). Significant prognostic factors for OS were treatment with chemotherapy, platinum doublets, platinum exposure in first line, and treatment beyond first line. Grade 3 or 4 adverse effects seen were anemia (13.9%, n = 36), vomiting (4.2%, n = 11), diarrhea (3.4%, n = 9), thrombocytopenia (3.4%, n = 9), and febrile neutropenia (3.1%, n = 8).

Conclusion This analysis confirms that chemotherapy is beneficial for advanced BTC. Platinum-based doublets are more effective than single agents. There is no significant difference between cisplatin and oxaliplatin. Patients who received multiple lines of treatment had better OS.

Keywords

advanced biliary tract cancers - first-line chemotherapy - outcomes

Authors' Contributions

N.P. contributed to conceptualization, design, definition of intellectual content, literature search, clinical studies, data acquisition, data analysis, statistical analysis, manuscript preparation, manuscript editing, and manuscript review. S.J.R. contributed to conceptualization, design, definition of intellectual content, clinical studies, data analysis, statistical analysis, manuscript preparation, manuscript editing, and manuscript review. S., M.V.T.K.M., P.K., R.P., P.L., S.K., R.T, K.S., and S.R.K. contributed to data acquisition, manuscript preparation, and manuscript review. K.B. contributed to data acquisition and manuscript review. D.G. contributed to data analysis, statistical analysis, and manuscript review.

Patient Consent

Patient consent is not required due to the retrospective nature of the study.

Publication History

Article published online:
25 June 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, 2nd Floor, Sector 2, Noida-201301 UP, India

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    Abstract

    Purpose Biliary tract cancers (BTCs), particularly gallbladder cancers (GBCs), are prevalent in India. Yet there are limited data on treatment outcomes. To bridge this gap, we performed an analysis of advanced BTC treatment outcomes at our institute, seeking to offer insights into real-world scenario.

    Materials and Methods This is a retrospective study comprising advanced BTC patients treated at our institute from January 2015 to March 2023. We assessed demographics, treatment approaches, progression-free survival (PFS), overall survival (OS), and associated toxicities.

    Results Of the 411 patients analyzed, the majority were GBC (67.3%, n = 277), while the rest were cholangiocarcinoma (CCA) (32.6%, n = 134). The median age of study population was 56 years. Palliative chemotherapy was administered in 85% (n = 349) of all patients. Gemcitabine–cisplatin doublet was the most commonly used chemotherapy regimen (80.2%, n = 280). Platinum doublets yielded higher response rates compared with single-agent/nonplatinum chemotherapy (60 vs. 30%, n = 133). The median PFS was 4 months. The median OS was 8 months with platinum doublets and 5 months with single-agent/nonplatinum chemotherapy (hazard ratio [HR]: 0.60, 95% confidence interval: [CI] 0.43–0.84, p = 0.0001). OS was no different based on the type of platinum agent used. Patients receiving multiple lines of treatment lived longer compared with those who received single line only (14 vs. 6 months, respectively, HR: 0.36, 95% CI: 0.28–0.45, p < 0.0001). Significant prognostic factors for OS were treatment with chemotherapy, platinum doublets, platinum exposure in first line, and treatment beyond first line. Grade 3 or 4 adverse effects seen were anemia (13.9%, n = 36), vomiting (4.2%, n = 11), diarrhea (3.4%, n = 9), thrombocytopenia (3.4%, n = 9), and febrile neutropenia (3.1%, n = 8).

    Conclusion This analysis confirms that chemotherapy is beneficial for advanced BTC. Platinum-based doublets are more effective than single agents. There is no significant difference between cisplatin and oxaliplatin. Patients who received multiple lines of treatment had better OS.

    Keywords

    advanced biliary tract cancers - first-line chemotherapy - outcomes

    Introduction

    Biliary tract cancers (BTCs) are rare and vary in prevalence worldwide.[1] India contributes up to 10%. of global BTC burden. Among BTC, gallbladder cancers (GBCs) are more prevalent in India (north vs. south India: 21.5 vs. 0.7/100,000 population).[2] Recent data from the Indian Council of Medical Research show GBC among the top 10 cancers in men in Assam and Jammu and Kashmir (2.6–6% of all cases) and women across northern and northeast regions. Cholangiocarcinomas (CCAs) are rare bile duct tumors, affecting less than 6 in 100,000 people. Their occurrence varies by geographic location, possibly due to different risk factors.[3] Clinical presentation of BTC is quite nonspecific during early stages in the majority. This leads to a delay in diagnosis, presentation in advanced stages making them ineligible for any curative treatments and thus overall poor outcomes.

    Gemcitabine with cisplatin or oxaliplatin remains the initial chemotherapy regimen of choice in advanced BTC.[4] [5] In a recent trial, there was no benefit to the addition of a third drug, paclitaxel to the standard doublet regimen.[6] Across Indian studies, the doublet combination has shown a median overall survival (OS) of 8.5 months.[7] Although two new randomized clinical trials have shown a modest survival benefit with the addition of an immune checkpoint inhibitor to the gemcitabine–platinum doublet, its applicability to a majority of our patients is questionable because of affordability issues.[8] [9] Herein, we did a retrospective analysis of patients with advanced BTC treated at our institute to reflect real-world outcomes.

    Materials and Methods

    Database and Patient Population

    This is a comprehensive analysis of treatment-naive patients with locally advanced/unresectable or metastatic adenocarcinoma of the biliary tract who presented to our institute from January 2015 to March 2023. Patient data were extracted from medical records and the hospital's electronic database. Patients deemed eligible were administered platinum-based doublet or single-agent chemotherapy at the discretion of the treating physician. Unfit patients were offered best supportive care (BSC) alone.

    Outcome Variables

    The parameters analyzed included demographics, treatment patterns, and outcomes. Data collected included specific regimens used (single agent vs. doublets, cisplatin/carboplatin vs. oxaliplatin), the number of lines of chemotherapy, objective response rates (ORR), progression-free survival (PFS), OS, and toxicity profile. Response evaluation to treatment was done after three or four cycles of chemotherapy or earlier at the discretion of treating physician. A clinical assessment followed by computed tomography (CT) scan, utilizing the Response Evaluation Criteria in Solid Tumors (RECIST version 1.1) was performed. Response rates and clinical benefit rates (CBRs) were reported as percentages. The primary outcome variables analyzed were ORR, PFS, and OS.

    PFS was calculated from the date of starting therapy to progressive disease, follow-up loss, chemotherapy discontinuation due to adverse events of grade 3 or 4 severity, or death secondary to any cause. OS was determined from the date of diagnosis until the death of the patient or the last follow-up, as confirmed through hospital records or telephonic contact, whichever was feasible. Treatment toxicity was assessed as per National Cancer Institute—Common Terminology Criteria for Adverse Events (CTCAE) version 4.0.

    Statistical Analysis

    Descriptive statistics (median values, frequencies, and percentages) were employed to characterize categorical variables such as age, gender distribution, treatment modalities, treatment response, and toxicities. Median PFS and OS were estimated using the Kaplan–Meier method. Hazard ratios (HR) for survival and 95% confidence intervals (CIs) were computed using the Mantel–Cox's test. Prognostic factors for PFS and OS were assessed using the log-rank test. Univariate analysis was performed using chi-square test and Fisher's exact test. Multivariate analysis by multiple logistic regression method was performed using SPSS 21.0 software (IBM, Armonk, New York, United States). A p-value less than 0.05 is considered significant.

    Ethical Approval

    This study received ethical approval from the Basavatarakam Indo-American Cancer Hospital & Research Institute, Institutional Ethics Committee Board (BIACH&RI IEC, Reg. no.: ECR/7/Inst/AP/2013/RR-20, protocol no.: IEC/2023/12, date: January 1, 2023). All procedures performed were by the ethical standards of the institution and/or national research committee. They were also in concordance with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards apart from Good Clinical Practice guidelines for the International Conference on Harmonization.

    Results

    Part I: Demographics and Patient Characteristics

    A total of 411 patients with advanced BTC were analyzed. There were 277 cases (67.3%) of GBC and 134 cases (32.6%) of CCA. The median age of the study population was 56 years (range: 18–76 years). There was a slight preponderance of females (54.8%, n = 152) in the GBC and males (61.1%, n = 82) in the CCA subgroup. Liver (83.4%, n = 343) and nonregional nodes (83.2%, n = 342) were the most common sites of metastases, followed by the skeleton (4.8%, n = 20) and lungs (4.2%, n = 18). Among CCA, intrahepatic CCA was the most frequent subsite seen (88%, n = 118).

    Part II: Treatment Data

    In the entire cohort ([Table 1]), 15.1% (n = 62) of all patients were ineligible for any chemotherapy due to poor performance status (PS). A platinum doublet combination was used in the treated majority (80.2%, n = 280). Gemcitabine–cisplatin was the most preferred regimen (n = 269, 96%). Among single agents, gemcitabine (n = 46, 66.6%) was used more frequently over capecitabine.



    Table 1

    Demographic and treatment details

    Whole cohort

    Gallbladder carcinoma

    Cholangiocarcinoma

    Total patients (n)

    411

    277 (67.3%)

    134 (32.6%)

    Median age (y)

    56

    56

    56

    Range (y)

    18–76

    23–80

    18–76

    Male

    207 (50.3%)

    125 (45.1%)

    82 (61.1%)

    Female

    204 (49.7%)

    152 (54.8%)

    52 (38.8%)

    ERCP + stent

    46 (11.19%)

    30 (10.8%)

    16 (11.9%)

    Histologic differentiation

     Well

    38 (9.2%)

    23 (8.3%)

    15 (11.19%)

     Moderate

    265 (64.4%)

    174 (62.8%)

    91 (67.9%)

     Poor

    108 (26.2%)

    80 (28.8%)

    28 (20.8%)

    Lines of treatment received

     0 (BSC)

    62 (15.08%)

    34 (12.2%)

    28 (20.8%)

     1

    264 (64.23%)

    184 (66.4%)

    80 (59.7%)

     2

    61 (14.84%)

    45 (16.2%)

    16 (11.9%)

     ≥3

    24 (5.83%)

    14 (5.05%)

    10 (7.4%)

     Range

    0–6

    0–6

    0–6

    First-line chemotherapy received

    349/411 (84.9%)

    243/277 (87.7%)

    106/134 (79.1%)

     Platinum-based combination

    280/349 (80.2%)

    206/243 (84.7%)

    74/106 (69.8%)

     Gemcitabine–platinum

    269 (96.04%)

    197 (95.6%)

    72 (97.2%)

     5FU platinum

    11 (3.9%)

    9 (4.3%)

    2 (2.7%)

     Single-agent chemotherapy

    69/349 (19.7%)

    37/243 (15.2%)

    32/106 (30.1%)

     5FU

    23 (33.3%)

    12 (32.4%)

    11 (34.3%)

     Gemcitabine

    46 (66.6%)

    25 (67.5%)

    21 (65.6%)
    Abbreviations: BSC, best supportive care; ERCP, endoscopic retrograde cholangiopancreatography; 5FU, fluorouracil.

    About 87.7%. (n = 243) in the GBC and 79.1%. (n = 106) in the CCA group received palliative chemotherapy. Platinum doublets were used in 84.7%. (n = 206) of GBC and 69.8%. (n = 74) of CCA patients. The preferred platinum partner was gemcitabine (GBC: 95.6%, n = 197 vs. CCA: 97%, n = 72). Single-agent chemotherapy was used less frequently (GBC: 15.2%, n = 37 vs. CCA: 30%, n = 32). Gemcitabine was the preferred single agent when used (GBC: 67.5%. n = 25 vs. CCA: 65.6%, n = 21). Only 32.2%. of all patients (entire cohort: n = 85, GBC: n = 59, CCA: n = 26) received treatment beyond first line. As second-line treatments, platinum doublets (n = 35, 41.1%), FOLFIRI (n = 21, 24.7%.), irinotecan (n = 13, 15.2%.), capecitabine (n = 8, 9.4%.), and others were used.

    Part III: Overall Survival

    The median OS for the entire study group, GBC group, and CCA group was 6 months ([Fig. 1]).


      Fig 1: Kaplan–Meier survival curves depicting overall survival (OS) for the whole cohort (a), gallbladder carcinoma (b), and cholangiocarcinoma (c).


    Patients treated with chemotherapy had better OS compared with BSC alone (entire cohort: 7 vs. 2 months, HR: 0.19, 95%. CI: 0.11–0.33, p < 0.0001; GBC: 7 vs. 2 month, HR: 0.28, 95%. CI: 0.19–0.41, p = 0.0001; and CCA: 8 vs. 3 months, HR: 0.22, 95%. CI: 0.10–0.48, p = 0.0001).

    Platinum doublets significantly improved OS compared with single/nonplatinum agents (entire cohort: 8 vs. 5 months, HR: 0.60, 95%. CI: 0.43–0.84, p = 0.0001; GBC: 8 vs. 4 months, HR: 0.41, 95%. CI: 0.26–0.63, p < 0.0001; and CCA: 9 vs. 5 months, HR: 0.50, 95%. CI: 0.30–0.82, p < 0.0006).

    The OS was better in patients who received multiple lines of chemotherapy compared with a single line (entire cohort: 14 vs. 6 months, HR: 0.36, 95%. CI: 0.28–0.45, p < 0.0001, GBC: 13 vs. 6 months, HR: 0.34, 95%. CI: 0.26–0.45, p < 0.0001; and CCA: 17 vs. 6 months, HR: 0.36, 95%. CI: 0.24–0.54, p < 0.0001).

    There was no difference in OS between cisplatin and oxaliplatin (entire cohort: 9 vs. 7 months, HR: 0.79, 95%. CI: 0.59–1.06, p = nonsignificant (NS); GBC: 9 vs. 6 months, HR: 0.72, 95%. CI: 0.51–1.03, p = NS, CCA: 10 vs. 8 months, HR: 0.88, 95%. CI: 0.52 – 1.49, p = NS).

    Part IV: Progression-Free Survival

    The median PFS was 4 months (range: 3–16 months), similar across the entire cohort and individual subgroups ([Fig. 2]). Platinum doublets, in comparison to single-agent/nonplatinum chemotherapy, resulted in a better PFS in the entire cohort (5 vs. 3 months, HR: 0.61, 95%. CI: 0.41–0.91, p < 0.0001) as well as in the CCA group (5 vs. 2 months, HR: 0.53, 95%. CI: 0.29–0.98, p = 0.004). However, the same was not seen in the GBC group (5 vs. 3 months, HR: 0.69, 95%. CI: 0.41–1.17, p = NS). There was no difference in PFS between cisplatin and oxaliplatin.


      Fig 2 : Kaplan–Meier survival curves depicting progression-free survival (PFS) for the whole cohort (a), and gallbladder (GB) and cholangiocarcinoma (CC) (b).


    Part V: Response Evaluation and Clinical Benefit Assessment

    Response evaluation as per RECIST criteria was feasible in 258 patients (73.9%.). Progression of disease (PD) was seen in 26.3%. (n = 68), while 56.5% (n = 146) had a partial response (PR). Stable disease was observed in 16.6%. (n = 43) of patients. Only one patient had a complete response. The CBR was 73.4%. (n = 191).

    Platinum doublets demonstrated higher responses in comparison to single/nonplatinum agent (PR: 61.2%, n = 133 vs. 31.7%, n = 13). Disease progression was also lower with doublets compared with single-agent/nonplatinum chemotherapy (PD: 22.1%, n = 48 vs. 48.7%, n = 20). The response rates did not differ significantly based on the type of platinum agent used.

    Part VI: Toxicity Data (Only CTCAE Grade 3 or 4)

    About 4.2%. (n = 11) patients experienced chemotherapy-induced nausea/vomiting, while 3.4%.(n = 9) had diarrhea. Anemia was seen in 13.9%. (n = 36), more so when gemcitabine–platinum combination was used. Febrile neutropenia was noted in 3.1%. (n = 8) and thrombocytopenia in 3.4%.. (n = 9) of cases. Biliary sepsis was documented in 3.8%. (n = 10) patients. Transaminitis secondary to oxaliplatin was present in 4.2%. (n = 11) cases. Change to oxaliplatin/carboplatin secondary to cisplatin-induced renal dysfunction was seen in four patients. Neuropathy was observed in 3.8%. (n = 10) of cases.

    Part VII: Prognostic Factors Affecting Overall Survival

    In the multivariate analysis done by logistic regression stepwise forward conditional method ([Table 2]), the prognostic factors for OS were: treatment group (p < 0.001), platinum doublet group (p < 0.001), platinum exposure in the first line (p < 0.001), and patients receiving multiple lines of chemotherapy (p < 0.001).



    Table 2

    Prognostic factors for OS

    Dependent variable

    Mean square

    Partial eta squared

    p-Value

    Age

    <50>50

    0.213

    0.085

    0.376

    Sex

    Male vs. female

    0.222

    0.071

    0.665

    Disease type

    GBC vs. CCA

    0.296

    0.108

    0.082

    Biliary obstruction

    Yes. vs. no

    0.111

    0.090

    0.296

    Treatment received

    Chemotherapy vs. BSC alone

    0.750

    0.476

    <0>

    Platinum doublet vs. single/nonplatinum agent

    2.875

    0.423

    <0>

    Cisplatin/carboplatin vs. oxaliplatin

    2.710

    0.284

    0.284

    Single line vs. multiple lines

    2.390

    0.351

    <0>

    Abbreviation: BSC, best supportive care; CCA, cholangiocarcinoma; GBC, gallbladder cancer; OS, overall survival.

    Discussion

    The median age of our study population was almost a decade and a half earlier compared with the West (56 vs. 71.2 years).[10] This was similar to what has been reported in other Indian studies (Dutta et al: 58 years).[11] There was a slight preponderance of female in the GBC and male in the CCA group as was reported in other studies.[12] Hilar CCA was the dominant CCA subsite in our study, while some studies report the opposite.[13] [14]

    Across studies, CCA patients tend to live longer than GBC (OS range CCA vs. GBC: 11–16 vs. 7–11 months).[15] [16] This could be due to differences in the tumor biology at these two sites. The CCA cohort of ours had a median OS of 9 months, which was inferior to that reported by Bhargava et al[23] (12 months), ABC-02 trial (11.7 months), and BT22 trial (11.2 months).

    Based on the ABC-02 and BT22 studies, gemcitabine–cisplatin doublet became the standard-of-care regimen for advanced BTC. In GBC, the median OS reported with platinum doublet was 9 months by Amit et al and 9.5 months by Sharma et al.[17] [18] Our study reports a median OS of 8 months, which is marginally inferior to the above. Possible explanation for this observation could be twofold. Primarily, one-third of our patients (34.8%.) did not receive the above standard. The reason being poor PS prohibiting “any” chemotherapy in 15.08%. (n = 62) and “doublet” chemotherapy in 19.7%. (n = 69) of patients. Moreover, only a meager third of them (32.2%., n = 85) received treatment beyond first line. This was because, at disease progression, the majority had a rapid decline in PS precluding any further chemotherapy, while in a minority, it was deterioration in liver function. Literature also reports this happening with advanced BTC patients ranging from 30 to 45%. across studies. Therefore, it is of utmost importance to use the most effective combination (platinum doublet) upfront to optimize survival outcomes.

    André et al and Sharma et al demonstrated similar OS with gemcitabine–oxaliplatin regimen.[19] Ramaswamy et al reported no difference in outcomes between cisplatin and oxaliplatin (8 vs. 7.7 months, p = NS). Findings in the present study also confirm the same.

    Recent randomized trials have shown that there is a modest improvement in OS when gemcitabine–platinum agents are combined with either durvalumab (Topaz-1: 12.8 vs. 11.5 months) or pembrolizumab (KEYNOTE-966: 12.7 vs. 10.9 months). The clinical significance of such small incremental benefit in “our” patients is questionable due to prohibitive costs involved in treatment. Several phase 2 trials also suggest that Her2neu is an actionable target in advanced BTC.[20] Agents such as trastuzumab, pertuzumab, Trastuzumab emtansine (TDM1), and trastuzumab deruxtecan are currently being evaluated for Her2 amplified tumors.[21] [22] Likewise for Her2 mutations, lapatinib and tucatinib are under trials. However, data from phase 3 randomized trials on optimal sequencing of various agents are still unknown.

    In the present study, patients neither underwent molecular testing (Her2neu, MSI, NGS) nor received any of the novel therapies (anti-Her2neu, immunotherapy, TKI). This was because all patients in our study were treated under the state-sponsored schemes which do not support them. This also underscores the unmet need and areas for improvement in management of this disease.

    The metastatic tumor burden at diagnosis, treatment group, continuation of maintenance chemotherapy, ability to receive second-line chemotherapy and beyond are some of the important prognostic factors affecting OS (Anadure et al).[24]

    Drawbacks of the Study

    The drawbacks of the study were as follows:

    1. Retrospective study.

    2. Heterogeneity of treatments.

    3. Missing data regarding grade 1 or 2 toxicity.

    4. Missing quality of life analysis.




    Conclusion

    This retrospective analysis confirms the benefit of chemotherapy in advanced BTC. Platinum-based doublets are more effective than single agents. There is no difference between cisplatin and oxaliplatin. Patients who received more than one line of treatment had better OS.

    Conflict of Interest

    None declared.

    Authors' Contributions

    N.P. contributed to conceptualization, design, definition of intellectual content, literature search, clinical studies, data acquisition, data analysis, statistical analysis, manuscript preparation, manuscript editing, and manuscript review. S.J.R. contributed to conceptualization, design, definition of intellectual content, clinical studies, data analysis, statistical analysis, manuscript preparation, manuscript editing, and manuscript review. S., M.V.T.K.M., P.K., R.P., P.L., S.K., R.T, K.S., and S.R.K. contributed to data acquisition, manuscript preparation, and manuscript review. K.B. contributed to data acquisition and manuscript review. D.G. contributed to data analysis, statistical analysis, and manuscript review.

    Patient Consent

    Patient consent is not required due to the retrospective nature of the study.


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    16.  Eckel F, Schmid RM. Chemotherapy and targeted therapy in advanced biliary tract carcinoma: a pooled analysis of clinical trials. Chemotherapy 2014; 60 (01) 13-23
      Crossref PubMed Search in Google Scholar
    17.  Amit RK, Anadure HP, Singh R. et al. A study on the clinical profile and treatment outcomes in gallbladder carcinoma from northern India. Oncology Journal of India 2020; 4 (03) 128-132
      Search in Google Scholar
    18.  Sharma A, Dwary AD, Mohanti BK. et al. Best supportive care compared with chemotherapy for unresectable gall bladder cancer: a randomized controlled study. J Clin Oncol 2010; 28 (30) 4581-4586
      Crossref PubMed Search in Google Scholar
    19.  André T, Tournigand C, Rosmorduc O. et al; GERCOR Group. Gemcitabine combined with oxaliplatin (GEMOX) in advanced biliary tract adenocarcinoma: a GERCOR study. Ann Oncol 2004; 15 (09) 1339-1343
      Crossref PubMed Search in Google Scholar
    20.  Javle M, Borad MJ, Azad NS. et al. Pertuzumab and trastuzumab for HER2-positive, metastatic biliary tract cancer (MyPathway): a multicentre, open-label, phase 2a, multiple basket study. Lancet Oncol 2021; 22 (09) 1290-1300
      Crossref PubMed Search in Google Scholar
    21.  Lee CK, Chon HJ, Cheon J. et al. Trastuzumab plus FOLFOX for HER2-positive biliary tract cancer refractory to gemcitabine and cisplatin: a multi-institutional phase 2 trial of the Korean Cancer Study Group (KCSG-HB19-14). Lancet Gastroenterol Hepatol 2023; 8 (01) 56-65
      Crossref PubMed Search in Google Scholar
    22.  Ohba A, Morizane C, Kawamoto Y. et al. Trastuzumab deruxtecan (T-DXd; DS-8201) in patients (pts) with HER2-expressing unresectable or recurrent biliary tract cancer (BTC): An investigator-initiated multicenter phase 2 study (HERB trial). Published online 2022; 4006-4006
      Search in Google Scholar
    23.  Bhargava PG, Kumar A, Simha V. et al. Presentation and outcomes with first-line chemotherapy in advanced cholangiocarcinomas-A relatively rare component of Biliary tract cancers in India. South Asian J Cancer 2020; 9 (04) 209-212
      Thieme Connect PubMed Search in Google Scholar
    24.  Anadure R, Sreen A, Singh HP. et al. A study on the clinical profile and treatment outcomes in gallbladder carcinoma from Northern India. Oncol J India 2020; 4 (03) 128-132

    Address for correspondence

    Nikhil Pathi, MD, DrNB
    Department of Medical Oncology, Basavatarakam Indo-American Cancer Hospital & Research Institute
    Hyderabad 500034, Telangana
    India   

    Publication History

    Article published online:
    25 June 2024

    © 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

    Thieme Medical and Scientific Publishers Pvt. Ltd.
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    We recommend

        Fig 1: Kaplan–Meier survival curves depicting overall survival (OS) for the whole cohort (a), gallbladder carcinoma (b), and cholangiocarcinoma (c).


        Fig 2 : Kaplan–Meier survival curves depicting progression-free survival (PFS) for the whole cohort (a), and gallbladder (GB) and cholangiocarcinoma (CC) (b).


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        Crossref PubMed Search in Google Scholar
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        Crossref PubMed Search in Google Scholar
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        Crossref PubMed Search in Google Scholar
      22.  Ohba A, Morizane C, Kawamoto Y. et al. Trastuzumab deruxtecan (T-DXd; DS-8201) in patients (pts) with HER2-expressing unresectable or recurrent biliary tract cancer (BTC): An investigator-initiated multicenter phase 2 study (HERB trial). Published online 2022; 4006-4006
        Search in Google Scholar
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        Thieme Connect PubMed Search in Google Scholar
      24.  Anadure R, Sreen A, Singh HP. et al. A study on the clinical profile and treatment outcomes in gallbladder carcinoma from Northern India. Oncol J India 2020; 4 (03) 128-132

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