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Gbessi DG, Gnangnon FHR, Kpossou AR, Gbetchedji PP, Seidou F, Imorou Souaïbou Y, Attolou SGR, Lawani I, Laleye MC, Gangbo F, Dossou FM, Sehonou J, Mehinto DK. Challenge of gastro-intestinal stromal tumor management in low-income countries: example of Benin. World J Surg Oncol 2022; 20:247. [PMID: 36451201 PMCID: PMC9714201 DOI: 10.1186/s12957-022-02709-9] [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: 10/07/2021] [Accepted: 05/30/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND GISTs are rare tumors but the most frequent mesenchymal tumors of the digestive tract. Diagnosis and treatment are challenging in low-income countries due to relatively poor access to immunohistochemistry and targeted therapy. In Africa, there are few studies about it. Imatinib, an oral targeted therapy, has been available in Benin since 2010 and free since 2016. This study describes the diagnosis and therapeutic management of GIST in Cotonou, Benin. METHODS This is a descriptive cross-sectional study, with retrospective data collection over a 10-year period from 2010 to 2020, focused on patients with histological confirmed gastro-intestinal stromal tumor (GIST). Cases were identified using the registry database and the archival files of the Hubert Koutoukou Maga National University Hospital of Cotonou (CNHU-HKM). RESULTS Fifteen GISTs were identified during the study period. The median age was 52 and the sex ratio was 2:1 (10 males and 5 females). The most frequent symptom was abdominal pain (n = 12). Delay in care seeking after onset of symptoms ranged from 24 h to 15 years. The most common site for GISTs was the stomach (n = 8). The median tumor size was 11 cm and the majority (n=10) was metastatic or locally advanced at the time of diagnosis. The tumors were often spindle-shaped at histology (n = 13) and the majority expressed KIT (n = 14). Most of the tumors (n = 12) were at high risk of recurrence according to the Joensuu scoring system. The availability of imatinib has improved the outcome of GIST with response in all cases it was used in neoadjuvant setting (n = 7). CONCLUSION GISTs are rare tumors and preferentially affect the stomach in Cotonou). Most of the tumors were large, unresectable at the time of diagnosis and at high risk of recurrence. Access to imatinib has revolutionized the management of those tumors in our country.
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Affiliation(s)
- Dansou Gaspard Gbessi
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | | | - Aboudou Raïmi Kpossou
- grid.420217.2Department of Hepato-Gastroenterology, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Pacifique Prudent Gbetchedji
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Falilatou Seidou
- Department of Pathology, Faculty of Health Sciences/ Abomey-Calavi University (FSS/UAC), Cotonou, Republic of Benin
| | - Yacoubou Imorou Souaïbou
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Setondji Gilles Roger Attolou
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Ismaïl Lawani
- Department of General Surgery, Departmental University Hospital Oueme-Plateau (CHDU-OP), Porto-Novo, Republic of Benin
| | - Marie-Christel Laleye
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Flore Gangbo
- Department of Pathology, Faculty of Health Sciences/ Abomey-Calavi University (FSS/UAC), Cotonou, Republic of Benin
| | - Francis Moïse Dossou
- Department of General Surgery, Departmental University Hospital Oueme-Plateau (CHDU-OP), Porto-Novo, Republic of Benin
| | - Jean Sehonou
- grid.420217.2Department of Hepato-Gastroenterology, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
| | - Delphin Kuassi Mehinto
- grid.420217.2Department of Visceral Surgery, National University Hospital Hubert Koutoukou Maga (CNHU-HKM), Cotonou, Republic of Benin
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van de Wal D, Elie M, Le Cesne A, Fumagalli E, den Hollander D, Jones RL, Marquina G, Steeghs N, van der Graaf WTA, Husson O. Health-Related Quality of Life and Side Effects in Gastrointestinal Stromal Tumor (GIST) Patients Treated with Tyrosine Kinase Inhibitors: A Systematic Review of the Literature. Cancers (Basel) 2022; 14:cancers14071832. [PMID: 35406604 PMCID: PMC8997462 DOI: 10.3390/cancers14071832] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The introduction of tyrosine kinase inhibitors (TKIs) has revolutionized the treatment of gastrointestinal stromal tumors (GISTs), resulting in a substantial gain in median overall survival. Subsequently, health-related quality of life (HRQoL) has become more relevant. Here, we systematically review the available literature on HRQoL issues and side effects of different TKIs registered for the treatment of GIST. METHODS A search through five databases was performed. Full reports in English describing HRQoL outcomes and/or side effects in GIST patients on TKI therapy were included. RESULTS A total of 104 papers were included; 13 studies addressed HRQoL, and 96 studies investigated adverse events. HRQoL in patients treated with imatinib, regorafenib, and ripretinib remained stable, whereas most sunitinib-treated patients reported a decrease in HRQoL. Severe fatigue and fear of recurrence or progression were specifically assessed as HRQoL issues and had a negative impact on overall HRQoL as well as psychological and physical well-being. The majority of studies focused on physician-reported side effects. Nearly all GIST patients treated with a TKI experienced at least one adverse event, mostly mild to moderate. CONCLUSIONS Despite the fact that almost all patients treated with a TKI experienced side effects, this did not seem to affect overall HRQoL during TKI therapy. In daily practice, it are the side effects that hamper a patient's HRQoL resulting in treatment adjustments, suggesting that the reported side effects were underestimated by physicians, or the measures used to assess HRQoL do not capture all relevant issues that determine a GIST patient's HRQoL.
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Affiliation(s)
- Deborah van de Wal
- Department of Medical Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek, 1066 CX Amsterdam, The Netherlands; (D.v.d.W.); (N.S.); (W.T.A.v.d.G.)
| | - Mai Elie
- Department of Medical Oncology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (M.E.); (D.d.H.)
| | - Axel Le Cesne
- Department of Medical Oncology, Gustave Roussy, 94805 Villejuif, France;
| | - Elena Fumagalli
- Department of Medical Oncology, IRCCS Foundation National Cancer Institute, 20133 Milan, Italy;
| | - Dide den Hollander
- Department of Medical Oncology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (M.E.); (D.d.H.)
| | - Robin L. Jones
- Department of Clinical Oncology, The Royal Marsden Hospital and Institute of Cancer Research, London SM2 5 NG, UK;
| | - Gloria Marquina
- Department of Medical Oncology, Hospital Clinico San Carlos, 28040 Madrid, Spain;
| | - Neeltje Steeghs
- Department of Medical Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek, 1066 CX Amsterdam, The Netherlands; (D.v.d.W.); (N.S.); (W.T.A.v.d.G.)
- Department of Clinical Pharmacology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek, 1066 CX Amsterdam, The Netherlands
| | - Winette T. A. van der Graaf
- Department of Medical Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek, 1066 CX Amsterdam, The Netherlands; (D.v.d.W.); (N.S.); (W.T.A.v.d.G.)
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Olga Husson
- Department of Medical Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek, 1066 CX Amsterdam, The Netherlands; (D.v.d.W.); (N.S.); (W.T.A.v.d.G.)
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Division of Clinical Studies, Institute of Cancer Research, London SM2 5NG, UK
- Correspondence: ; Tel.: +31-614-549-755
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Sugiyama Y, Sasaki M, Kouyama M, Tazaki T, Takahashi S, Nakamitsu A. Current treatment strategies and future perspectives for gastrointestinal stromal tumors. World J Gastrointest Pathophysiol 2022; 13:15-33. [PMID: 35116177 PMCID: PMC8788163 DOI: 10.4291/wjgp.v13.i1.15] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/23/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors that originate from the gastrointestinal tract, mostly from the stomach. GISTs are derived from the myenteric interstitial cells of Cajal and are caused by several mutations in the c-kit and platelet-derived growth factor receptor genes. Clinically, GISTs are detected by endoscopic and imaging findings and are diagnosed by immunostaining. Surgery is the first line of treatment, and if the tumor is relatively small, minimally invasive surgery such as laparoscopy is performed. In recent years, neoadjuvant therapy has been administered to patients with GISTs that are suspected of having a large size or infiltration to other organs. Postoperative adjuvant imatinib is the standard therapy for high-risk GISTs. It is important to assess the risk of recurrence after GIST resection. However, the effect of tyrosine kinase inhibitor use will vary by the mutation of c-kit genes and the site of mutation. Furthermore, information regarding gene mutation is indispensable when considering the treatment policy for recurrent GISTs. This article reviews the clinicopathological characteristics of GISTs along with the minimally invasive and multidisciplinary treatment options available for these tumors. The future perspectives for diagnostic and treatment approaches for these tumors have also been discussed.
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Affiliation(s)
- Yoichi Sugiyama
- Department of Gastrointestinal Surgery, JA Hiroshima General Hospital, Hatsukaichi 738-8503, Hiroshima, Japan
| | - Masaru Sasaki
- Department of Gastrointestinal Surgery, JA Hiroshima General Hospital, Hatsukaichi 738-8503, Hiroshima, Japan
| | - Mohei Kouyama
- Department of Gastrointestinal Surgery, JA Hiroshima General Hospital, Hatsukaichi 738-8503, Hiroshima, Japan
| | - Tatsuya Tazaki
- Department of Gastrointestinal Surgery, JA Hiroshima General Hospital, Hatsukaichi 738-8503, Hiroshima, Japan
| | - Shinya Takahashi
- Department of Surgery, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Atsushi Nakamitsu
- Department of Gastrointestinal Surgery, JA Hiroshima General Hospital, Hatsukaichi 738-8503, Hiroshima, Japan
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Zemła P, Stelmach A, Jabłońska B, Gołka D, Mrowiec S. A Retrospective Study of Postoperative Outcomes in 98 Patients Diagnosed with Gastrointestinal Stromal Tumor (GIST) of the Upper, Middle, and Lower Gastrointestinal Tract Between 2009 and 2019 at a Single Center in Poland. Med Sci Monit 2021; 27:e932809. [PMID: 34645778 PMCID: PMC8525312 DOI: 10.12659/msm.932809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Gastrointestinal stromal tumors (GISTs) arise in the smooth muscle pacemaker interstitial cells of Cajal, or similar cells. The aim of this retrospective study between 2009 and 2019 from a single center in Poland was to assess the selected prognostic factors (location, tumor size, mitotic index, body mass index (BMI), length of hospital stay, age, sex, and coexistent neoplasm) and to investigate postoperative outcomes in 98 patients with GIST of the upper, middle, and lower gastrointestinal tract. MATERIAL AND METHODS Between 2009 and 2019, 98 patients (50 women and 48 men) with an average age of 63.8 years (range from 38 to 90 years) were operated on for GIST in the Department of Gastrointestinal Surgery in Katowice, Poland. Based on the intraoperative and postoperative investigations, the tumor size and mitotic index were determined in each case. RESULTS A statistically significant correlation between age and mitotic index (MI) was found (p=0.02). The higher the MI, the younger the age of the patients. However, regardless of sex, younger patients had a tendency to survive longer. A >60-year-old male patient's probability of survival was around 65% after 40 months. Higher mitotic index was also associated with larger tumor size (p<0.0001). Female patients had a tendency to survive longer than males. CONCLUSIONS The findings from this small retrospective study support the importance of preoperative evaluation and frequent postoperative follow-up for patients with GIST of the gastrointestinal tract, particularly in older male patients, and patients with malignant comorbidities, which are associated with increased mortality.
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Affiliation(s)
- Patryk Zemła
- Student Scientific Society, Department of Gastrointestinal Surgery, Medical University of Silesia, Katowice, Poland
| | - Anna Stelmach
- Student Scientific Society, Department of Gastrointestinal Surgery, Medical University of Silesia, Katowice, Poland
| | - Beata Jabłońska
- Department of Gastrointestinal Surgery, Medical University of Silesia, Katowice, Poland
| | - Dariusz Gołka
- Department of Pathology, Blackpool Teaching Hospitals, Blackpool, United Kingdom
| | - Sławomir Mrowiec
- Department of Gastrointestinal Surgery, Medical University of Silesia, Katowice, Poland
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5
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Cavnar MJ, Seier K, Gönen M, Curtin C, Balachandran VP, Tap WD, Antonescu CR, Singer S, DeMatteo RP. Prognostic Factors After Neoadjuvant Imatinib for Newly Diagnosed Primary Gastrointestinal Stromal Tumor. J Gastrointest Surg 2021; 25:1828-1836. [PMID: 33169327 PMCID: PMC8386278 DOI: 10.1007/s11605-020-04843-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/17/2020] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Neoadjuvant imatinib (Neo-IM) therapy may facilitate R0 resection in primary gastrointestinal stromal tumors (GISTs) that are large or in difficult anatomic locations. While response to preoperative tyrosine kinase inhibitors is associated with better outcome in metastatic GIST, little is known about prognostic factors after Neo-IM in primary GIST. STUDY DESIGN Patients with primary GIST with or without synchronous metastases who underwent Neo-IM were retrospectively analyzed from a prospective maintained institutional database for Response Evaluation Criteria in Solid Tumors (RECIST), tumor viability, and mitotic rate. Overall survival (OS) was estimated by Kaplan-Meier and compared by log-rank test. Cox proportionate hazard models were used for univariate and multivariate analysis. RESULTS One hundred and fifty patients were treated for a median of 7.1 months (range 0.2-160). By RECIST, partial response, stable disease, and progressive disease were seen in 40%, 51%, and 9%, respectively. By pathologic analysis, ≤ 50% of the tumor was viable in 72%, and the mitotic rate was ≤ 5/50HPF in 74%. On multivariate analysis, RECIST response and tumor viability were not associated with OS, while post-treatment high mitotic rate (hazard ratio (HR) for death 5.3, CI 2.3-12.4), R2 margins (HR 6.0, CI 2.3-15.5), and adjuvant imatinib (HR 0.4, CI 0.2-0.9) were (p < 0.05). Five-year OS was 81 vs. 38% for low vs. high mitotic rate; 81, 59, and 39% for R0, R1, and R2 margins; and 75 vs 61% for adjuvant vs. no adjuvant imatinib therapy (p < 0.05). CONCLUSIONS In primary GIST undergoing Neo-IM therapy, progression was uncommon, but substantial down-sizing occurred in the minority. High tumor mitotic rate and incomplete resection following Neo-IM were associated with poor outcome, while adjuvant imatinib was associated with prolonged survival.
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Affiliation(s)
- Michael J. Cavnar
- Department of Surgery, Memorial Sloan Kettering Cancer
Center, New York, NY,Department of Surgery, University of Kentucky, Lexington,
KY
| | - Kenneth Seier
- Department of Biostatistics, Memorial Sloan Kettering
Cancer Center, New York, NY
| | - Mithat Gönen
- Department of Biostatistics, Memorial Sloan Kettering
Cancer Center, New York, NY
| | - Christina Curtin
- Department of Surgery, Memorial Sloan Kettering Cancer
Center, New York, NY
| | | | - William D. Tap
- Department of Medicine, Memorial Sloan Kettering Cancer
Center, New York, NY,Department of Medicine, Weill Cornell Medical College, New
York, NY
| | | | - Sam Singer
- Department of Surgery, Memorial Sloan Kettering Cancer
Center, New York, NY
| | - Ronald P. DeMatteo
- Department of Surgery, Memorial Sloan Kettering Cancer
Center, New York, NY
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Hedenström P, Andersson C, Sjövall H, Enlund F, Nilsson O, Nilsson B, Sadik R. Pretreatment Tumor DNA Sequencing of KIT and PDGFRA in Endosonography-Guided Biopsies Optimizes the Preoperative Management of Gastrointestinal Stromal Tumors. Mol Diagn Ther 2021; 24:201-214. [PMID: 32124386 PMCID: PMC7113213 DOI: 10.1007/s40291-020-00451-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Neoadjuvant tyrosine kinase inhibitor (TKI) therapy increases the chance of organ-preserving, radical resection in selected patients with gastrointestinal stromal tumors (GISTs). We aimed to evaluate systematic, immediate DNA sequencing of KIT and PDGFRA in pretreatment GIST tissue to guide neoadjuvant TKI therapy and optimize preoperative tumor response. METHODS All patients who were candidates for neoadjuvant therapy of a suspected GIST [the study cohort (SC)] were prospectively included from January 2014 to March 2018. Patients were subjected to pretreatment endosonography-guided fine-needle biopsy (EUS-FNB) or transabdominal ultrasound-guided needle biopsy (TUS-NB), followed by immediate tumor DNA sequencing (< 2 weeks). A historic (2006-2013) reference cohort (RC) underwent work-up without sequencing before neoadjuvant imatinib (n = 42). The rate of optimal neoadjuvant therapy (TherapyOPTIMAL) was calculated, and the induced tumor size reduction (Tumor RegressionMAX, %) was evaluated by computed tomography (CT) scan. RESULTS The success rate of pretreatment tumor DNA sequencing in the SC (n = 81) was 77/81 (95%) [EUS-FNB 71/74 (96%); TUS-NB 6/7 (86%)], with mutations localized in KIT (n = 58), PDGFRA (n = 18), or neither gene, wild type (n = 5). In patients with a final indication for neoadjuvant therapy, the TherapyOPTIMAL was higher in the SC compared with the RC [61/63 (97%) versus 33/42 (79%), p = 0.006], leading to a significantly higher Tumor RegressionMAX in patients treated with TKI (27% vs. 19%, p = 0.015). CONCLUSIONS Pretreatment endosonography-guided biopsy sampling followed by immediate tumor DNA sequencing of KIT and PDGFRA is highly accurate and valuable in guiding neoadjuvant TKI therapy in GIST. This approach minimizes maltreatment with inappropriate regimens and leads to improved tumor size reduction before surgery.
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Affiliation(s)
- Per Hedenström
- Division of Medical Gastroenterology, Department of Internal Medicine, Sahlgrenska University Hospital, Blå Stråket 3, 413 35, Gothenburg, Sweden. .,Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Carola Andersson
- Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Henrik Sjövall
- Division of Medical Gastroenterology, Department of Internal Medicine, Sahlgrenska University Hospital, Blå Stråket 3, 413 35, Gothenburg, Sweden.,Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Enlund
- Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ola Nilsson
- Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Bengt Nilsson
- Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Riadh Sadik
- Division of Medical Gastroenterology, Department of Internal Medicine, Sahlgrenska University Hospital, Blå Stråket 3, 413 35, Gothenburg, Sweden
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Yang J, Chen Z, Liu W, Wang X, Ma S, Jin F, Wang X. Development of a Malignancy Potential Binary Prediction Model Based on Deep Learning for the Mitotic Count of Local Primary Gastrointestinal Stromal Tumors. Korean J Radiol 2020; 22:344-353. [PMID: 33169545 PMCID: PMC7909867 DOI: 10.3348/kjr.2019.0851] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 05/29/2020] [Accepted: 06/15/2020] [Indexed: 11/24/2022] Open
Abstract
Objective The mitotic count of gastrointestinal stromal tumors (GIST) is closely associated with
the risk of planting and metastasis. The purpose of this study was to develop a
predictive model for the mitotic index of local primary GIST, based on deep learning
algorithm. Materials and Methods Abdominal contrast-enhanced CT images of 148 pathologically confirmed GIST cases were
retrospectively collected for the development of a deep learning classification
algorithm. The areas of GIST masses on the CT images were retrospectively labelled by an
experienced radiologist. The postoperative pathological mitotic count was considered as
the gold standard (high mitotic count, > 5/50 high-power fields [HPFs]; low
mitotic count, ≤ 5/50 HPFs). A binary classification model was trained on the
basis of the VGG16 convolutional neural network, using the CT images with the training
set (n = 108), validation set (n = 20), and the test set (n = 20). The sensitivity,
specificity, positive predictive value (PPV), and negative predictive value (NPV) were
calculated at both, the image level and the patient level. The receiver operating
characteristic curves were generated on the basis of the model prediction results and
the area under curves (AUCs) were calculated. The risk categories of the tumors were
predicted according to the Armed Forces Institute of Pathology criteria. Results At the image level, the classification prediction results of the mitotic counts in the
test cohort were as follows: sensitivity 85.7% (95% confidence interval [CI]:
0.834–0.877), specificity 67.5% (95% CI: 0.636–0.712), PPV 82.1% (95% CI:
0.797–0.843), NPV 73.0% (95% CI: 0.691–0.766), and AUC 0.771 (95% CI:
0.750–0.791). At the patient level, the classification prediction results in the
test cohort were as follows: sensitivity 90.0% (95% CI: 0.541–0.995), specificity
70.0% (95% CI: 0.354–0.919), PPV 75.0% (95% CI: 0.428–0.933), NPV 87.5%
(95% CI: 0.467–0.993), and AUC 0.800 (95% CI: 0.563–0.943). Conclusion We developed and preliminarily verified the GIST mitotic count binary prediction model,
based on the VGG convolutional neural network. The model displayed a good predictive
performance.
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Affiliation(s)
- Jiejin Yang
- Department of Radiology, Peking University First Hospital, Peking University, Beijing, China
| | - Zeyang Chen
- Department of General Surgery, Peking University First Hospital, Peking University, Beijing, China
| | - Weipeng Liu
- Beijing Smart Tree Medical Technology Co. Ltd., Beijing, China
| | - Xiangpeng Wang
- Beijing Smart Tree Medical Technology Co. Ltd., Beijing, China
| | - Shuai Ma
- Department of Radiology, Peking University First Hospital, Peking University, Beijing, China
| | - Feifei Jin
- Department of Biostatistics, Peking University First Hospital, Beijing, China
| | - Xiaoying Wang
- Department of Radiology, Peking University First Hospital, Peking University, Beijing, China.
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Jakob J, Hohenberger P. Neoadjuvant Therapy to Downstage the Extent of Resection of Gastrointestinal Stromal Tumors. Visc Med 2018; 34:359-365. [PMID: 30498703 PMCID: PMC6257203 DOI: 10.1159/000493405] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION Gastrointestinal stromal tumors (GIST) are rare malignant tumors in terms of incidence, and they are not linked to specific symptoms. Often, primary tumors, particularly of the stomach, rectum, or rectovaginal space, are quite large when detected, and multivisceral resection seems to be the treatment of choice as the mainstay of therapy is complete tumor removal. If a gain-of-function mutation in the KIT gene is present, drug therapy with receptor tyrosine kinase inhibitors (RTKIs) might significantly downstage primary GIST tumors. METHODS A review of the literature was performed to identify the current evidence for preoperative treatment of GIST regarding toxicity, efficacy, and oncological outcome, including mutational data from our own database. RESULTS Four phase II as well as several cohort studies showed acceptable toxicity and no increased perioperative morbidity of preoperative imatinib. Progressive disease during preoperative treatment was a rare event, and partial response was achieved in 40-80% of all patients. For methodological reasons, the trials cannot prove an oncological long-term superiority of preoperative treatment. CONCLUSION Preoperative therapy with imatinib is safe and recommended for patients with locally advanced GIST. Neoadjuvant imatinib therapy may enable less invasive and organ-sparing surgery, avoid tumor rupture during extensive resectional procedures, and improve the quality of perioperative RTKI treatment.
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Affiliation(s)
- Jens Jakob
- Division of Surgical Oncology and Thoracic Surgery, Department of Surgery, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- Department of General, Visceral and Pediatric Surgery, University Medical Center, Göttingen, Germany
| | - Peter Hohenberger
- Division of Surgical Oncology and Thoracic Surgery, Department of Surgery, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Ishikawa T, Kanda T, Kameyama H, Wakai T. Neoadjuvant therapy for gastrointestinal stromal tumor. Transl Gastroenterol Hepatol 2018; 3:3. [PMID: 29441368 DOI: 10.21037/tgh.2018.01.01] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022] Open
Abstract
Molecular-targeting therapy using tyrosine kinase inhibitor imatinib mesylate is effective for metastasis/recurrent gastrointestinal stromal tumors (GISTs). Likewise, imatinib would be effective in the neoadjuvant therapy for high-risk GIST. Neoadjuvant therapy may have the potential to increase the complete resection rate and to avoid the surgical rupture by decreasing the tumor size. Thereby, it is expected that improvement of recurrence rate and survival rate can be obtained by neoadjuvant therapy. Neoadjuvant therapy is also expected to be favored from the viewpoint of organ/function preservation by tumor shrinkage. The existing results of clinical trials established the feasibility of neoadjuvant imatinib therapy. However, proof of the survival effectiveness of neoadjuvant imatinib therapy has not been sufficiently demonstrated. The aim of this article is to introduce previous evidence and strategies regarding neoadjuvant therapy for GIST.
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Affiliation(s)
- Takashi Ishikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tatsuo Kanda
- Department of Surgery, Sanjo General Hospital, Niigata, Japan
| | - Hitoshi Kameyama
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Koseła-Paterczyk H, Rutkowski P. Dermatofibrosarcoma protuberans and gastrointestinal stromal tumor as models for targeted therapy in soft tissue sarcomas. Expert Rev Anticancer Ther 2017; 17:1107-1116. [DOI: 10.1080/14737140.2017.1390431] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hanna Koseła-Paterczyk
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
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Phase II study of neoadjuvant imatinib in large gastrointestinal stromal tumours of the stomach. Br J Cancer 2017; 117:25-32. [PMID: 28535156 PMCID: PMC5520207 DOI: 10.1038/bjc.2017.144] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 04/15/2017] [Accepted: 04/26/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Gastrointestinal stromal tumours (GISTs) with high-risk features have poor prognosis even if adjuvant treatment is given. Neoadjuvant imatinib may increase the cure rate by shrinking large GISTs and preserve organ function. METHODS We conducted an Asian multinational phase II study for patients with gastric GISTs ≥10 cm. Patients received neoadjuvant imatinib (400 mg/day) for 6-9 months. The primary end point was R0 resection rate. RESULTS A total of 56 patients were enroled in this study. In the full analysis set of 53 patients, neoadjuvant imatinib for ≥6 months was completed in 46 patients. Grade 3-4 neutropenia and rash occurred in 8% and 9%, respectively, but there were no treatment-related deaths. The response rate by RECIST was 62% (95% CI, 48-75%). The R0 resection rate was 91% (48/53) (95% CI, 79-97%). Preservation of at least half of the stomach was achieved in 42 of 48 patients with R0 resection. At the median follow-up time of 32 months, 2-year overall and progression-free survival rates were 98% and 89%, respectively. CONCLUSIONS Neoadjuvant imatinib treatment for 6-9 months is a promising treatment for large gastric GISTs, allowing a high R0 resection rate with acceptable toxicity.
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Imatinib treatment of poor prognosis mesenchymal-type primary colon cancer: a proof-of-concept study in the preoperative window period (ImPACCT). BMC Cancer 2017; 17:282. [PMID: 28424071 PMCID: PMC5395860 DOI: 10.1186/s12885-017-3264-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/05/2017] [Indexed: 12/18/2022] Open
Abstract
Background The identification of four Consensus Molecular Subtypes (CMS1–4) of colorectal cancer forms a new paradigm for the design and evaluation of subtype-directed therapeutic strategies. The most aggressive subtype - CMS4 - has the highest chance of disease recurrence. Novel adjuvant therapies for patients with CMS4 tumours are therefore urgently needed. CMS4 tumours are characterized by expression of mesenchymal and stem-like genes. Previous pre-clinical work has shown that targeting Platelet-Derived Growth Factor Receptors (PDGFRs) and the related KIT receptor with imatinib is potentially effective against mesenchymal-type colon cancer. In the present study we aim to provide proof for the concept that imatinib can reduce the aggressive phenotype of primary CMS4 colon cancer. Methods Tumour biopsies from patients with newly diagnosed stage I-III colon cancer will be analysed with a novel RT-qPCR test to pre-select patients with CMS4 tumours. Selected patients (n = 27) will receive treatment with imatinib (400 mg per day) starting two weeks prior to planned tumour resection. To assess treatment-induced changes in the aggressive CMS4 phenotype, RNA sequencing will be performed on pre- and post-treatment tissue samples. Discussion The development of effective adjuvant therapy for primary colon cancer is hindered by multiple factors. First, new drugs that may have value in the prevention of (early) distant recurrence are almost always first tested in patients with heavily pre-treated metastatic disease. Second, measuring on-target drug effects and biological consequences in tumour tissue is not commonly a part of the study design. Third, due to the lack of patient selection tools, clinical trials in the adjuvant setting require large patient populations. Finally, the evaluation of recurrence-prevention requires a long-term follow-up. In the ImPACCT trial these issues are addressed by including newly diagnosed pre-selected patients with CMS4 tumours prior to primary tumour resection, rather than non-selected patients with late-stage disease. By making use of the pre-operative window period, the biological effect of imatinib treatment on CMS4 tumours can be rapidly assessed. Delivering proof-of-concept for drug action in early stage disease should form the basis for the design of future trials with subtype-targeted therapies in colon cancer patients. Trial registration ClinicalTrials.gov: NCT02685046. Registration date: February 9, 2016.
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Rectal GIST-Outcomes and viewpoint from a tertiary cancer center. Indian J Gastroenterol 2016; 35:445-449. [PMID: 27783353 DOI: 10.1007/s12664-016-0710-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 10/12/2016] [Indexed: 02/04/2023]
Abstract
INTRODUCTION There is scarce data relating to methods to improve sphincter preservation in rectal gastrointestinal stromal tumor (GIST). Increasing the duration of neoadjuvant (NA) imatinib resulting in improved sphincter preservation rate has not been established. This retrospective analysis looks at the rates of sphincter preservation in rectal GIST with NA imatinib and effect of duration of NA imatinib on the same to find out optimum duration of NA with respect to sphincter preservation in rectal GIST patients. METHODS Twenty-three cases of GIST of lower third of rectum were treated at our centre from 2005 till 2015. NA imatinib was used in a dose of 400 mg. Response evaluation was done every 3 months with a pelvic magnetic resonance imaging. Surgical management was determined by a team of experienced gastrointestinal oncosurgeons. RESULTS Five patients underwent upfront surgery which included local resection in four patients and abdominoperineal resection in one patient. NA imatinib was used in 69.5 % (16/23) patients. Median duration of NA imatinib was 15 months (3-84 months). Amongst who underwent a sphincter-salvage surgery median duration of NA imatinib was 13 months whereas 18 months in patients who required a sphincter-sacrificing surgery (p = 0.683). The radiologic response included partial response in 75 % (12/16) patients, stable disease in 18.7 % (3/16) and one with progressive disease. Definitive surgical resection was possible in 13 patients (81.3 %) after NA imatinib. Median progression-free survival (PFS) was 120 months in the whole cohort whereas median overall survival (OS) was not reached. Four-year estimated PFS and OS was 81 % and 100 %, respectively. Median disease-free survival in upfront surgery group vs. neoadjuvant imatinib group was 70 vs. 120 months, respectively (p = 0.039). CONCLUSION Neoadjuvant imatinib appears to be a useful option in improving chances of sphincter preservation without adversely affecting the outcome. Use of neoadjuvant imatinib leads to improvement in progression-free survival in patients with GIST of lower third of the rectum.
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Sicklick JK, Lopez NE. Optimizing surgical and imatinib therapy for the treatment of gastrointestinal stromal tumors. J Gastrointest Surg 2013; 17:1997-2006. [PMID: 23775094 PMCID: PMC3824223 DOI: 10.1007/s11605-013-2243-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 05/31/2013] [Indexed: 02/08/2023]
Abstract
INTRODUCTION The discovery of activating KIT and PDGFRα mutations in gastrointestinal stromal tumors (GISTs) represented a milestone as it allowed clinicians to use tyrosine kinase inhibitors, like imatinib, to treat this sarcoma. Although surgery remains the only potentially curative treatment, patients who undergo complete resection may still experience local recurrence or distant metastases. Therapeutic strategies that combine surgical resection and adjuvant imatinib may represent the best treatment to maximize patient outcomes. In addition to the use of imatinib in the adjuvant and metastatic settings, neoadjuvant imatinib, employed as a cytoreductive therapy, can decrease tumor volume, increase the probability of complete resection, and may reduce surgery-related morbidities. Thus, selected patients with metastatic disease may be treated with a combination of preoperative imatinib and metastasectomy. However, it is critical that patients with GIST be evaluated by a multidisciplinary team to coordinate surgery and targeted therapy in order to maximize clinical outcomes. DISCUSSION Following a systematic literature review, we describe the presentation, diagnosis, and treatment of GIST, with a discussion of the risk assessment for imatinib therapy. The application of surgical options, combined with adjuvant/neoadjuvant or perioperative imatinib, and their potential impact on survival for patients with primary, recurrent, or metastatic GIST are discussed.
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Affiliation(s)
- Jason K. Sicklick
- Division of Surgical Oncology, Department of Surgery, Moores UCSD Cancer Center, University of California, San Diego, UC San Diego Health System, 3855 Health Sciences Drive, Mail Code 0987, La Jolla, CA 92093-0987 USA
| | - Nicole E. Lopez
- Division of Surgical Oncology, Department of Surgery, Moores UCSD Cancer Center, University of California, San Diego, UC San Diego Health System, 3855 Health Sciences Drive, Mail Code 0987, La Jolla, CA 92093-0987 USA
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Linch M, Claus J, Benson C. Update on imatinib for gastrointestinal stromal tumors: duration of treatment. Onco Targets Ther 2013; 6:1011-23. [PMID: 23935374 PMCID: PMC3735340 DOI: 10.2147/ott.s31260] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common sarcoma of the gastrointestinal tract, with transformation typically driven by activating mutations of c-KIT and less commonly platelet-derived growth factor receptor alpha (PDGFRA). Successful targeting of c-KIT and PDGFRA with imatinib, a tyrosine kinase inhibitor (TKI), has had a major impact in advanced GIST and as an adjuvant and neoadjuvant treatment. If treatment with imatinib fails, further lines of TKI therapy have a role, but disease response is usually only measured in months, so strategies to maximize the benefit from imatinib are paramount. Here, we provide an overview of the structure and signaling of c-KIT coupled with a review of the clinical trials of imatinib in GIST. In doing so, we make recommendations about the duration of imatinib therapy and suggest how best to utilize imatinib in order to improve patient outcomes in the future.
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Affiliation(s)
- Mark Linch
- Sarcoma Unit, Royal Marsden Hospital, United Kingdom ; Protein Phosphorylation Laboratory, Cancer Research UK London Research Institute, London, United Kingdom
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Balachandran VP, Dematteo RP. Targeted therapy for cancer: the gastrointestinal stromal tumor model. Surg Oncol Clin N Am 2013; 22:805-21. [PMID: 24012400 DOI: 10.1016/j.soc.2013.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Gastrointestinal stromal tumors (GISTs) are unique tumors, arising largely due to oncogenic mutations in KIT or PDGFRA tyrosine kinases. Although surgery remains the most effective treatment, the remarkable clinical success achieved with kinase inhibition has made GIST one of the most successful examples of targeted therapy for the treatment of cancer. The insight gained from this approach has allowed a deeper understanding of the molecular biology driving kinase dependent cancers, and the adaptations to kinase inhibition, linking genotype to phenotype. Mutation tailored kinase inhibition with second generation TKI's, and combination immunotherapy to harness the effects of TKIs remain exciting areas of investigation.
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Affiliation(s)
- Vinod P Balachandran
- Department of Surgery, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
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Kong SH, Yang HK. Surgical treatment of gastric gastrointestinal stromal tumor. J Gastric Cancer 2013; 13:3-18. [PMID: 23610714 PMCID: PMC3627804 DOI: 10.5230/jgc.2013.13.1.3] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/09/2013] [Accepted: 03/10/2013] [Indexed: 12/13/2022] Open
Abstract
Gastrointestinal stromal tumor is the most common mesenchymal tumor in the gastrointestinal tract and is most frequently developed in the stomach in the form of submucosal tumor. The incidence of gastric gastrointestinal stromal tumor is estimated to be as high as 25% of the population when all small and asymptomatic tumors are included. Because gastric gastrointestinal stromal tumor is not completely distinguished from other submucosal tumors, a surgical excisional biopsy is recommended for tumors >2 cm. The surgical principles of gastrointestinal stromal tumor are composed of an R0 resection with a normal mucosa margin, no systemic lymph node dissection, and avoidance of perforation, which results in peritoneal seeding even in cases with otherwise low risk profiles. Laparoscopic surgery has been indicated for gastrointestinal stromal tumors <5 cm, and the indication for laparoscopic surgery is expanded to larger tumors if the above mentioned surgical principles can be maintained. A simple exogastric resection and various transgastric resection techniques are used for gastrointestinal stromal tumors in favorable locations (the fundus, body, greater curvature side). For a lesion at the gastroesophageal junction in the posterior wall of the stomach, enucleation techniques have been tried preserve the organ's function. Those methods have a theoretical risk of seeding a ruptured tumor, but this risk has not been evaluated by well-designed clinical trials. While some clinical trials are still on-going, neoadjuvant imatinib is suggested when marginally unresectable or multiorgan resection is anticipated to reduce the extent of surgery and the chance of incomplete resection, rupture or bleeding.
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Affiliation(s)
- Seong-Ho Kong
- Department of Surgery, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
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