Person: ÇUBUKÇU, ERDEM
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ÇUBUKÇU
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ERDEM
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Publication Real-life experience with chemotherapy plus biologics in first-line treatment of right-sided, ras wild-type, metastatic colon cancer: A multicenter onco-colon Turkey study(Elsevier, 2021-07-03) Arslan, C.; Kefeli, U.; Yildirim, E.; Isikdogan, A.; Karadurmus, N.; Karabulut, B.; Cicin, I.; Bilir, C.; Ozcelik, M.; Cil, T.; Celik, S.; Bozkurt, O.; Harputluoglu, H.; Oven, B.; Geredeli, C.; Tural, D.; Sakin, A.; Cevik, D.; Gumus, M.; Yalcin, S.; Çubukcu, E.; ÇUBUKÇU, ERDEM; Bursa Uludağ Üniversitesi/Tıp Fakültesi.; 0000-0002-7584-3868; 0000-0002-1372-4791; 0000-0001-6906-7500; 0000-0002-3982-7465; 0000-0003-3550-9993; 0000-0002-1618-1147; HTO-4176-2023; I-1932-2016; A-2491-2017Publication Trastuzumab ± capecitabine maintenance after the first-line treatment of HER2-positive advanced gastric cancer: Retrospective observational real-life data of Turkish oncology group(Springer, 2021-01-24) Gürbüz, Mustafa; Akkuş, Erman; Sakin, Abdullah; Urvay, Semiha; Demiray, Atike Gökçen; Şahin, Süleyman; Sakalar, Teoman; Erol, Cihan; Şendur, Mehmet Ali Nahit; Şahin, Ahmet Bilgehan; Çubukcu, Erdem; Guven, Deniz Can; Kılıçkap, Saadettin; Ergün, Yakup; Uncu, Doğan; Turhal, Nazim Serdar; Uskent, Necdet; Çınkır, Havva Yeşil; Demir, Atakan; Acar, Ramazan; Karadurmuş, Nuri; Türker, Sema; Altınbaş, Mustafa; Karaoğlan, Mert; Şenler, Filiz Çay; ŞAHİN, AHMET BİLGEHAN; ÇUBUKÇU, ERDEM; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; 0000-0002-7846-0870 ; 0000-0002-0070-0889; AAM-4927-2020 ; JGT-4101-2023Purpose In the ToGA trial for HER2-positive advanced gastric cancer, cisplatin plus fluoropyrimidine was given for 6 cycles; trastuzumab was given until disease progression. However, there is a lack of real-life data about trastuzumab maintenance after 6 cycle chemotherapy. This study aims to present real-life data of trastuzumab +/- capecitabine maintenance after 6 cycles of platinum, fluoropyrimidine, and trastuzumab in non-progressive patients. Methods This is a retrospective multicenter study of the Turkish Oncology Group. A total of 35 HER2-positive, inoperable locally advanced, recurrent, or metastatic gastric adenocarcinoma patients being non-progressive at the end of 6 cycle chemotherapy and being given trastuzumab +/- capecitabine as maintenance treatment were included from sixteen oncology centers. Baseline characteristics, objective tumor responses, progression free and overall survival data, and toxicities were determined. Results About 68% of the patients were given CF, and 32% were given FOLFOX with trastuzumab as the first-line treatment. The best response in 6 cycle chemotherapy was complete 8 (22%), partial 24 (68%), and stable disease 3 (8%). All patients had trastuzumab maintenance (median cycle 13; range 7-51), and 49% of the patients had capecitabine with trastuzumab (median capecitabine cycle 6; range 2-30). The median PFS of the patients was 12.0 months (95% CI 10.3-13.7), and median OS was 17.4 months (95% CI 15.2-19.5). There were 2 patients with grade 1 cardiotoxicity. Conclusion Trastuzumab maintenance +/- capecitabine after 6 cycles of trastuzumab plus combined chemotherapy treatment revealed efficacy and safety in non-progressive HER2-positive advanced gastric cancer.Publication Clinical and laboratory outcomes of solid cancer patients reinfected with sars-cov-2(Elsevier, 2021-09-21) Yazici, O.; Unsal, O.; Ozdemir, N.; Uner, A.; Ozet, A.; Cubukcu, E.; ÇUBUKÇU, ERDEM; Ocak, B.; OCAK, BİROL; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; 0000-0001-7537-1699; 0000-0001-8731-9636; ABC-9831-2021Publication Chemo-immunotherapy with atezolizumab in extensive-stage small-cell lung cancer; single-center experience(Akad Doktorlar Yayınevi, 2020-01-01) Şahin, Ahmet Bilgehan; Çubukcu, Erdem; Ocak, Birol; Deligönül, Adem; Kaçan, Turgut; Orhan, Sibel Oyucu; Evrensel, Türkkan; ŞAHİN, AHMET BİLGEHAN; ÇUBUKÇU, ERDEM; OCAK, BİROL; DELİGÖNÜL, ADEM; OYUCU ORHAN, SİBEL; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı; 0000-0002-7846-0870; 0000-0001-7537-1699; 0000-0001-8217-3471; 0000-0002-9732-5340; AAJ-8314-2021; AAJ-1027-2021; AAM-4927-2020; ETP-1691-2022; HHA-1866-2022; ESM-4544-2022Chemo-immunotherapy (CIT) with platin, etoposide and monoclonal antibodies targeting the PD-1/PDL-1 pathway has recently improved survival in extensive-stage small-cell lung cancer (SCLC) after decades. We aimed to investigate the efficacy and safety of CIT with atezolizumab in extensive-stage SCLC in chemotherapy naive patients. Eleven patients who were treated and followed in our center were included in this retrospective observational study. All the patients received carboplatin, etoposide and atezolizumab in the induction phase and atezolizumab in the maintenance phase. The Kaplan-Meier test was used to determine progression-free survival (PFS) and overall survival (OS), and the effects of the sites of metastasis were analyzed using the log-rank test. The median age was 69.9 years, and 81.8% were male. The median number of CIT and total atezolizumab cycles was 4 and 7, respectively. 63.6% received maintenance therapy. Median PFS was 5.2 months (95% CI: 3.4-6.9), and median OS was 11.3 months (95% CI: 1.0-21.5). The overall response rate was 63.6%. There was no significant difference between patients with and without liver metastasis in terms of PFS and OS. We observed toxicity higher than grade 2 in more than half of the patients, and hematological toxicities were prominent. CIT with carboplatin, etoposide and atezolizumab is efficient and safe in extensive-stage SCLC considering the PFS, OS, response rates, 12-month survival rate, and side effects. The progression of liver lesions was remarkable. Cranial and thoracic radiation are issues that should be discussed in the future with data from clinical studies.Publication Correlation between ubiquitin e3 ligases (siahs) and heat shock protein 90 in breast cancer patients(Iranian Scientific Society Medical Entomology, 2022-08-01) Takanlou, Leila Sabour; Çeçener, Gülşah; Takanlou, Maryam Sabour; Nazlioglu, Hulya Ozturk; Unlu, Havva Tezcan; Isik, Ozgen; Egeli, Unal; Tunca, Berrin; Çubukcu, Erdem; Tolunay, Sahsine; Gokgoz, Mustafa Sehsuvar; Cecener, Gulsah; ÇEÇENER, GÜLŞAH; Nazlioglu, Hulya Ozturk; ÖZTÜRK NAZLIOĞLU, HÜLYA; Isik, Ozgen; IŞIK, ÖZGEN; Egeli, Unal; EGELİ, ÜNAL; Tunca, Berrin; TUNCA, BERRİN; Çubukcu, Erdem; ÇUBUKÇU, ERDEM; Tolunay, Sahsine; TOLUNAY, ŞAHSİNE; 0000-0002-1928-992X; 0000-0002-3820-424X; 0000-0002-1590-4833; 0000-0002-0910-4258; 0000-0002-9541-5035; 0000-0001-7904-883X; 0000-0002-1619-6680; KGL-6846-2024; AAH-1420-2021; GRE-6268-2022; AAW-9602-2020; GYU-0252-2022Background: Breast cancer is a heterogeneous disease and differences in the expression levels of the ER, PR, and HER2 the triplet of established biomarkers used for clinical decision-making have been reported among breast cancer patients. Furthermore, resistance to anti-estrogen and anti-HER2 therapies emerges in a considerable rate of breast cancer patients, and novel drug therapies are required. Several anomalous signaling pathways have been known in breast cancer have been known; heat shock protein 90 (HSP90) is one of the most plenty proteins in breast cells. The family of ubiquitin ligases such as SIAH1 and SIAH2 is known to specifically target misfolded proteins to the proteasome; also, they have been illustrated to play a role in RAS signaling and as an essential downstream signaling component required for EGFR/HER2 in breast cancer.Methods: The expression of SIAH2, HSP90, and HER2 was assessed by quantitative Real-Time PCR in 85 invasive ductal carcinoma breast tumor samples at Uludag University Hospital in Turkey during the years 2018-2019, and its association with the clinicopathologic variables of patients was evaluated.Results: HSP90, SIAH1, and SIAH2 were significantly (P=0.0271, P=0.022, and P=0.0311) upregulated tumor tissue of patients with breast cancer. Moreover, this study observed a significant association between the high expression of SIAH2/ HSP90 with ER status, high expression of HSP90 with Recurrence/ Metastasis, and high expression of SIAH2 with Ki-67 proliferation index.Conclusion: The HSP90 and SIAH2 expressions play a significant role in breast cancer development by combining the experimental and clinical data obtained from the literature.Publication Efficacy and safety of trastuzumab emtansine in her2 positive metastatic breast cancer: Real-world experience(Taylor & Francis, 2021-06-05) Bahçeci, Aykut; Paydaş, Semra; Ak, Naziye; Ferhatoğlu, Ferhat; Saip, Pınar Mualla; Şeydaoğlu, Gülşah; Bilici, Mehmet; Şimşek, Melih; Tekin, Salim Başol; Çalıkuşu, Züleyha; Yavuz, Sinan; Şahin, Ahmet Bilgehan; Çubukcu, Erdem; Evrensel, Türkkan; Değirmencioğlu, Serkan; Demiray, Atike Gökçen; Yumuk, Perran Fulden; Alan, Özkan; Çıkman, Duygu İlke; Demirelli, Fuat Hulusi; Köstek, Osman; Gökyer, Ali; Doğan, Mutlu; Bal, Öznur; Çakar, Burcu; Gökmen, Erhan; Yamaç, Deniz; Korkmaz, Taner; Aliyev, Altay; Keskin, Özge; Urvay, Semiha; Buyukşimşek, Mahmut; Karadeniz, Cemile; Yıldız, Birol; Çınkır, Havva Yeşil; Demir, Hacer; Beypınar, İsmail; Karacin, Cengiz; Eser, Kadir; Baykara, Meltem; Kılıçkap, Saadettin; Okutur, Kerem; Bulut, Gülcan; Alkan, Ali; Arpacı, Erkan; Pilancı, Kezban Nur; Demir, Atakan; Işık, Deniz; Yıldırım, Nilgün; ŞAHİN, AHMET BİLGEHAN; ÇUBUKÇU, ERDEM; EVRENSEL, TÜRKKAN; 0000-0002-7846-0870 ; AAM-4927-2020; JGT-4101-2023 ; EXZ-0745-2022Aim The aim of this study is to evaluate the efficacy and toxicity of trastuzumab emtansine (T-DM1) in cases with metastatic breast cancer (mBC) in different lines of treatment. Method Retrospective analysis of T-DM1 results of human epidermal growth factor receptor 2 (Her2) positive 414 cases with mBC from 31 centers in Turkey. Findings Except 2, all of the cases were female with a median age of 47. T-DM1 had been used as second-line therapy in 37.7% of the cases and the median number of T-DM1 cycles was 9. Progression-free survival (PFS) and overall survival (OS) times were different according to the line of treatment. The median OS was found as 43, 41, 46, 23 and 17 months for 1st, 2nd, 3rd, 4th and 5th line, respectively (p = 0.032) while the median PFS was found as 37, 12, 8, 8 and 8 months, respectively (p = 0.0001). Treatment was well tolerated by the patients. The most common grade 3-4 adverse effects were thrombocytopenia (2.7%) and increased serum gamma-glutamyl transferase (2%). Discussion The best of our knowledge this is the largest real-life experience about the safety and efficacy of T-DM1 use in cases with mBC after progression of Her2 targeted treatment. This study suggests and supports that T-DM1 is more effective in earlier lines of treatment and is a reliable option for mBC.Publication Clinical and laboratory outcomes of the solid cancer patients reinfected with sars-cov-2(Future Medicine, 2021-11-26) Unsal, Oktay; Yazici, Ozan; Ozdemir, Nuriye; Uner, Aytug; Ozet, Ahmet; Cubukcu, Erdem; ÇUBUKÇU, ERDEM; Ocak, Birol; OCAK, BİROL; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; 0000-0001-7537-1699; 0000-0001-8731-9636; AEC-2238-2022Lay abstract Solid cancer patients are at a higher risk than general population in terms of Coronavirus disease 2019 (COVID-19) infectivity and COVID-19-associated death and disease. It is also known that COVID-19 infection has a more severe course in immunocompromised patients. Solid cancer patients may be a vulnerable subgroup of patients to reinfection with COVID-19. The rate of reinfection was 3.1% (n = 32) in our study population of 1024 solid cancer patients who were tested positive on a COVID-19 PCR test. The death rate of the patients with solid cancer was 34.3% (n = 11). In addition, we demonstrated that intensive care follow-up is significantly longer during the reinfection period. It was demonstrated that the time between the last dose of chemotherapy for the patients and the reinfection COVID PCR positivity did not affect the death rate. The COVID-19 pandemic has affected people's daily lives and treatments in many aspects. Owing to the high death rate of reinfection, even if cancer patients have reinfection, our approach is to continue cancer treatment as soon as the patient is cured. Finally, we support the priority vaccination of cancer patients.Introduction: The objective of this study was to evaluate the clinical and laboratory outcomes of solid cancer patients who were reinfected with COVID-19. Methods: Patients who were tested negative on the Coronavirus disease 2019 (COVID-19) PCR test and those with improved clinical conditions after infection with COVID-19 were enrolled in this study. Patients who received a positive COVID-19 PCR test 28 days after the initial positive PCR test were considered as reinfected. Results: A total of 1024 patients with the diagnosis of solid malignancy and COVID-19 PCR positivity were examined. The reinfection rate was 3.1%. Mortality rate of reinfection was 34.3%. The serum ferritin and creatinine values in reinfection were found to be significantly higher than the first infection (respectively; p = 0.015, p = 0.014). Conclusion: This study has demonstrated one of the first preliminary clinical results of COVID-19 reinfection in solid cancer patients.Publication The impact of ki-67 index, squamous differentiation, and several clinicopathologic parameters on the recurrence of low and intermediate-risk endometrial cancer(Assoc Basic Medical Sci Federation Bosnia & Herzegovina Sarajevo, 2021-01-01) Ocak, Birol; Atalay, Fatma Oz; Sahin, Ahmet Bilgehan; Ozsen, Mine; Dakiki, Bahar; Ture, Seray; Mesohorli, Merve; Odman, Hikmet Utku; Tanriverdi, Ozgur; Ocakoglu, Gokhan; Bayrak, Mehmet; Ozan, Hakan; Demiroz, Candan; Sali, Seda; Orhan, Sibel Oyucu; Deligönül, Adem; Çubukcu, Erdem; Evrensel, Turkkan; Ocak, Birol; OCAK, BİROL; Sahin, Ahmet Bilgehan; ŞAHİN, AHMET BİLGEHAN; Atalay, Fatma Oz; ÖZ ATALAY, FATMA; Ozsen, Mine; ÖZŞEN, MİNE; Dakiki, Bahar; DAKİKİ KORUCU, BAHAR; Ture, Seray; TÜRE AYDIN, SERAY; Mesohorli, Merve; Odman, Hikmet Utku; Ocakoglu, Gokhan; OCAKOĞLU, GÖKHAN; Bayrak, Mehmet; Ozan, Hakan; OZAN, HAKAN; Demiroz, Candan; DEMİRÖZ ABAKAY, CANDAN; Sali, Seda; SALİ, SEDA; Orhan, Sibel Oyucu; OYUCU ORHAN, SİBEL; Deligonul, Adem; DELİGÖNÜL, ADEM; Cubukcu, Erdem; ÇUBUKÇU, ERDEM; Evrensel, Turkkan; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; 0000-0001-7537-1699; 0000-0002-7188-6115; 0000-0002-7846-0870; 0000-0002-5771-7649; 0000-0001-9255-2475; 0000-0002-1114-6051; 0000-0003-1600-333X; AEC-2238-2022; ABA-2897-2021; AAH-5180-2021; AAM-4927-2020; AAJ-8314-2021Endometrial endometrioid carcinoma (EEC) represents approximately 75-80% of endometrial carcinoma cases. Three hundred and thirty-six patients with EEC followed-up in the authors' medical center between 2010 and 2018 were included in our study. Two hundred and seventy-two low and intermediate EEC patients were identified using the European Society for Medical Oncology criteria and confirmed by histopathological examination. Recurrence was reported in 17 of these patients. The study group consisted of patients with relapse. A control group of 51 patients was formed at a ratio of 3:1 according to age, stage, and grade, similar to that in the study group. Of the 17 patients with recurrent disease, 13 patients (76.5%) were Stage 1A, and 4 patients (23.5%) were Stage 1B. No significant difference was found in age, stage, and grade between the case and control groups (p > 0.05). Body mass index, parity, tumor size, lower uterine segment involvement, squamous differentiation (SqD), and Ki-67 index with p<0.25 in the univariate logistic regression analysis were included in the multivariate analysis. Ki-67 was statistically significant in multivariate analysis (p = 0.018); however, there was no statistical significance in SqD and other parameters. Our data suggest that the Ki-67 index rather than SqD needs to be assessed for recurrence in patients with low- and intermediate-risk EEC.Publication The ki-67 proliferation index predicts recurrence-free survival in patients with dermatofibrosarcoma protuberans(Assoc Basic Medical Sci Federation Bosnia & Herzegovina Sarajevo, 2021-01-01) Tanriverdi, Ozgur; Ozsen, Mine; ÖZŞEN, MİNE; Deligonul, Adem; DELİGÖNÜL, ADEM; Yazici, Serkan; YAZİCİ, SERKAN; Cetintas, Sibel Kahraman; Yalcinkaya, Ulviye; YALÇINKAYA, ÜLVİYE; Sahin, Ahmet Bilgehan; ŞAHİN, AHMET BİLGEHAN; Orhan, Sibel Oyucu; OYUCU ORHAN, SİBEL; Ocak, Birol; OCAK, BİROL; Evrensel, Turkkan; EVRENSEL, TÜRKKAN; Kahveci, Ramazan; KAHVECİ, RAMAZAN; Cubukcu, Erdem; ÇUBUKÇU, ERDEM; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Plastik Cerrahi ve Estetik Anabilim Dalı.; 0000-0001-6407-0962; 0000-0002-5771-7649; 0000-0002-7846-0870; 0000-0002-0598-7284; 0000-0001-7537-1699; AAJ-8314-2021; AEC-2238-2022; AAM-4927-2020; M-2172-2015Dermatofibrosarcoma protuberans (DFSP) is an uncommon soft tissue sarcoma that originates from the dermis or subcutaneous tissue in the skin. While its prognosis is generally favorable, disease recurrence is relatively frequent. Since morbidity after repeated surgery may be significant, an optimized prediction of recurrence-free survival (RFS) has the potential to improve current management strategies. The purpose of this study was to investigate the prognostic value of the Ki-67 proliferation index with respect to RFS in patients with DFSP We retrospectively analyzed data from 45 patients with DFSP. We calculated the Ki-67 proliferation index as the percentage of immunostained nuclei among the total number of tumor cell nuclei regardless of the intensity of immunostaining. We constructed univariate and multivariate Cox proportional hazards regression models to identify predictors of RFS. Among the 45 patients included in the study, 8 developed local recurrences and 2 had lung metastases (median follow-up: 95.o months; range: 5.2-412.4 months). The RFS rates at 60, 120, and 240 months of follow-up were 83.8%, 76.2%, and 65.3%, respectively. The median Ki-67 proliferation index was 14%. Notably, we identified the Ki-67 proliferation index as the only independent predictor for RFS in multivariate Cox proportional hazards regression analysis (hazard ratio = 1.106, 95% confidence interval = 1.019-1.200, p = 0.016). In summary, our results highlight the potential usefulness of the Ki-67 proliferation index for facilitating the identification of patients with DFSP at a higher risk of developing disease recurrences.Publication DPYD c.1905+1G>A promotes fluoropyrimidine-induced anemia, a prognostic factor in disease-free survival, in colorectal cancer(Mary Ann Liebert, Inc, 2021-04-01) Deligönül, Adem; Aksoy, Seçil; Tezcan, Gülçin; Tunca, Berrin; Kanat, Özkan; Çubukcu, Erdem; Yılmazlar, Tuncay; Öztürk, Ersin; Egeli, Ünal; Çeçener, Gülşah; Alemdar, Adem; Evrensel, Türkkan; DELİGÖNÜL, ADEM; AKSOY, SEÇİL; TEZCAN, GÜLÇİN; TUNCA, BERRİN; Kanat, Özka; ÇUBUKÇU, ERDEM; YILMAZLAR, AHMET TUNCAY; EGELİ, ÜNAL; ÇEÇENER, GÜLŞAH; ALEMDAR, ADEM; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Diş Hekimliği Fakültesi/Temel Bilimler Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Biyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Genel Cerrahi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Sağlık Bilimleri Enstitüsü.; 0000-0002-6400-4911; 0000-0002-5956-8755; 0000-0002-1619-6680; 0000-0001-8593-5101; 0000-0001-7904-883X; 0000-0002-3820-424X; HIZ-7332-2022; AAH-1420-2021; AAH-3843-2020; ESM-4544-2022; JDG-0330-2023; ABI-6078-2020; CYM-0930-2022; ETP-1691-2022; CKK-3621-2022; AAP-9988-2020; EXZ-0745-2022Background and Aim: In 10-30% of colorectal cancer (CRC) patients, toxic reactions occur after fluoropyrimidine-based chemotherapy. A dihydropyridine dehydrogenase (DPYD) gene variant, c.1905 + 1G>A, leads to intolerance to fluoropyrimidines. Due to the low frequency of this variant in many populations, the prevalence of fluoropyrimidine-induced hematologic side effects in CRC patients with the c.1905 + 1G>A variant is unclear. In this study, we investigated the prevalence of the DPYD c.1905 + 1 variants in a Turkish CRC cohort and the potential effects of these variants on fluoropyrimidine-induced hematologic side effects.Materials and Methods: The DPYD c.1905 + 1 variant was genotyped using polymerase chain reaction-restriction fragment length polymorphism analysis and confirmed by Sanger sequencing in peripheral blood samples of 100 CRC patients who received fluoropyrimidine-based chemotherapy and 60 healthy volunteers. The association of c.1905 + 1 variants with susceptibility to hematologic side effects was evaluated.Results: The DPYD c.1905 + 1G>A variant was more common in the CRC group than in the healthy control group (p = 0.001). The presence of the c.1905 + 1G>A variant was associated with thrombocytopenia (p = 0.039) and anemia (p = 0.035). CRC patients with fluoropyrimidine-induced anemia had shorter disease-free survival than CRC patients without fluoropyrimidine-induced anemia (p = 0.0009).Conclusions: Before administering fluoropyrimidine-based chemotherapy, genetic screening for the DPYD c.1905 + 1G>A variant should be performed with the aim of preventing anemia and anemia-induced complications in CRC patients.
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