Homayounfar, Kia

[["dc.bibliographiccitation.journal","Oncology Research and Treatment"],["dc.bibliographiccitation.volume","37"],["dc.contributor.author","Ruehlmann, Felix"],["dc.contributor.author","Nietert, Manuel M."],["dc.contributor.author","Sprenger, Thilo"],["dc.contributor.author","Wolff, Hendrik Andreas"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Liersch, Torsten"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.date.accessioned","2018-11-07T09:34:12Z"],["dc.date.available","2018-11-07T09:34:12Z"],["dc.date.issued","2014"],["dc.identifier.isi","000343816900255"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32127"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Karger"],["dc.publisher.place","Basel"],["dc.title","SRC expression in locally advanced rectal cancer-before and after neoadjuvant chemoradiotherapy"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","550"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","British Journal of Surgery"],["dc.bibliographiccitation.lastpage","557"],["dc.bibliographiccitation.volume","101"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Helms, H.-J."],["dc.contributor.author","Lordick, Florian"],["dc.contributor.author","Rueschoff, Josef"],["dc.contributor.author","Conradi, L.-C."],["dc.contributor.author","Sprenger, T."],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Liersch, Thorsten"],["dc.date.accessioned","2018-11-07T09:41:56Z"],["dc.date.available","2018-11-07T09:41:56Z"],["dc.date.issued","2014"],["dc.description.abstract","Background: Multidisciplinary discussion of the treatment of patients with colorectal liver metastases (CRLM) is advocated currently. The aim of this study was to investigate medical oncologists' and surgeons' assessment of resectability and indication for chemotherapy, and the effect of an educational intervention on such assessment. Methods: Medical histories of 30 patients with CRLM were presented to ten experienced medical oncologists and 11 surgeons at an initial virtual tumour board meeting (TB1). Treatment recommendations were obtained from each participant by voting for standardized answers. Following lectures on the potential of chemotherapy and surgery, assessment was repeated at a second virtual tumour board meeting (TB2), using the same patients and participants. Results: Overall, 630 answers (21 x 30) were obtained per tumour board meeting. At TB1, resectability was expected more frequently by surgeons. Participants changed 56.8 per cent of their individual answers at TB2. Assessment shifted from potentially resectable to resectable CRLM in 81 of 161 and from unresectable to (potentially) resectable CRLM in 29 of 36 answers. Preoperative chemotherapy was indicated more often by medical oncologists, and overall was included in 260 answers (41.3 per cent) at TB1, compared with only 171 answers (27.1 per cent) at TB2. Medical oncologists more often changed their decision to primary resection in resectable patients (P = 0.006). Postoperative chemotherapy was included in 51.9 and 52.4 per cent of all answers at TB1 and TB2 respectively, with no difference in changes between medical oncologists and surgeons (P = 0.980). Conclusion: Resectability and indication for preoperative chemotherapy were assessed differently by medical oncologists and surgeons. The educational intervention resulted in more patients deemed resectable by both oncologists and surgeons, and less frequent indication for chemotherapy."],["dc.description.sponsorship","Merck Serono GmbH, Germany"],["dc.identifier.doi","10.1002/bjs.9436"],["dc.identifier.isi","000332700100017"],["dc.identifier.pmid","24756914"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33842"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2168"],["dc.relation.issn","0007-1323"],["dc.title","Discrepancies between medical oncologists and surgeons in assessment of resectability and indication for chemotherapy in patients with colorectal liver metastases"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Clinical Oncology"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Sprenger, Thilo"],["dc.contributor.author","Rothe, Hilka"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Liersch, Torsten"],["dc.date.accessioned","2018-11-07T09:45:05Z"],["dc.date.available","2018-11-07T09:45:05Z"],["dc.date.issued","2014"],["dc.identifier.isi","000333682100536"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34538"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Soc Clinical Oncology"],["dc.publisher.place","Alexandria"],["dc.relation.conference","Gastrointestinal Cancers Symposium"],["dc.relation.eventlocation","San Francisco, CA"],["dc.title","Residual rectal cancer after preoperative radiochemotherapy (ypT1-2): An indication for local excision instead of radical surgery?"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","435"],["dc.bibliographiccitation.issue","4_suppl"],["dc.bibliographiccitation.journal","Journal of Clinical Oncology"],["dc.bibliographiccitation.lastpage","435"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Conradi, L."],["dc.contributor.author","Bleckmann, A."],["dc.contributor.author","Schirmer, M."],["dc.contributor.author","Sprenger, T."],["dc.contributor.author","Homayounfar, K."],["dc.contributor.author","Wolff, H. A."],["dc.contributor.author","Becker, H."],["dc.contributor.author","Ghadimi, B. M."],["dc.contributor.author","Beissbarth, Tim"],["dc.contributor.author","Liersch, T."],["dc.date.accessioned","2022-06-08T07:57:19Z"],["dc.date.available","2022-06-08T07:57:19Z"],["dc.date.issued","2011"],["dc.description.abstract","435 Background: Fluorouracil (5FU) remains the backbone of neoadjuvant radiochemotherapy (RCT) as well as adjuvant therapeutic strategies in multimodal treatment of rectal cancer patients. Due to its central role as the major target of 5FU thymidylate synthase (TS) is a promising biomarker in rectal cancer. We assessed TS in 208 patients with regard to its predictive/prognostic capacity for disease free DFS and overall cancer specific survival (CSS). Methods: 167 patients cUICC stages II (28%) and III (72%) received preoperative 5FU based RCT followed by total mesorectal excision (TME) A comparison group n = 41 received postoperative RCT after primary TME. All patients were treated after standardized protocols within phase-II/-III trials of the German Rectal Cancer Study Group. TS levels from pretreatment biopsies and corresponding resection specimens were assessed by immunohistochemical staining for their impact on DFS and CSS. Additionally, a TS gene polymorphism (28 bp repeat) was analysed in respect to intracellular protein expression levels and prognostic significance. Results: Patients with low TS expression in pre-treatment biopsies showed a correlation with impaired CSS (p = 0.015). After neoadjuvant RCT there was evidence of lymph node metastases ypUICC stage III in 32.6%. Complete histopathologically confirmed tumor regression TRG 4 was achieved in 16 patients (9.5%). During follow-up (median 57 months) patients with low intratumoral TS expression and positive nodal status were at high risk for local and/or distant metastatic recurrence (p = 0.040). Analysis of the 28bp repeat revealed a correlation of 3/ 3 genotype with high TS expression in pretherapeutical biopsies (p = 0.05). Conclusions: TS represents a prognostic biomarker in locally advanced rectal cancer indicating an unfavourable outcome for patients with low TS expression and might help to adapt adjuvant therapy regimens by stratifying patients according to their risk for cancer recurrence. No significant financial relationships to disclose."],["dc.identifier.doi","10.1200/jco.2011.29.4_suppl.435"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110056"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1527-7755"],["dc.relation.issn","0732-183X"],["dc.title","Biomarker study in rectal cancer patients after 5FU-based radiochemotherapy: Evaluation of the prognostic capacity of thymidylate synthase in pretreatment biopsies and resected adenocarcinoma."],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S430"],["dc.bibliographiccitation.journal","European Journal of Cancer"],["dc.bibliographiccitation.volume","47"],["dc.contributor.author","Conradi, L.C."],["dc.contributor.author","Bleckmann, A."],["dc.contributor.author","Sprenger, T."],["dc.contributor.author","Schirmer, M."],["dc.contributor.author","Homayounfar, K."],["dc.contributor.author","Wolff, H.A."],["dc.contributor.author","Becker, H."],["dc.contributor.author","Ghadimi, B.M."],["dc.contributor.author","Beissbarth, Tim"],["dc.contributor.author","Liersch, T."],["dc.date.accessioned","2022-06-08T07:58:33Z"],["dc.date.available","2022-06-08T07:58:33Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1016/S0959-8049(11)71771-3"],["dc.identifier.pii","S0959804911717713"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110450"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.issn","0959-8049"],["dc.title","6126 POSTER Thymidylate Synthase as Biomarker in Rectal Cancer Patients After 5-FU-based Radiochemotherapy – Evaluation of the Prognostic Capacity in Pre-treatment Biopsies and Resected Adenocarcinoma"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","638"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Cancer"],["dc.bibliographiccitation.lastpage","649"],["dc.bibliographiccitation.volume","123"],["dc.contributor.author","Sahlmann, Carsten-Oliver"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Niessner, Martin"],["dc.contributor.author","Dyczkowski, Jerzy"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Braulke, Friederike"],["dc.contributor.author","Meller, Birgit"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Meller, Johannes"],["dc.contributor.author","Goldenberg, David M."],["dc.contributor.author","Liersch, Torsten"],["dc.date.accessioned","2018-11-07T10:27:25Z"],["dc.date.available","2018-11-07T10:27:25Z"],["dc.date.issued","2017"],["dc.description.abstract","BACKGROUND: In previous work, a single administration of anticarcinoembryonic antigen (anti-CEA) I-131-labetuzumab radioimmunotherapy (RIT) after complete resection of colorectal liver metastases was well tolerated and significantly improved survival compared with controls. In the current phase 2 trial, the authors studied repeated RIT in the same setting, examining safety, feasibility, and efficacy. METHODS: Sixty-three patients (median age, 64.5 years) received RIT at 40 to 50 millicuries/m(2) per dose. Before the receipt of RIT, restaging was performed with computed tomography/magnetic resonance imaging and 18 F-fluorodeoxyglucose-positron emission to confirm that patients were \"truly adjuvant.\" Patients who had elevated serum CEA levels or radiographically inconclusive new lesions were classified as \"possibly nonadjuvant,\" but they also received RIT. Time to progression (TTP), overall survival (OS), and cause-specific survival (CSS) were calculated. The median follow-up was 54 months. RESULTS: After the first course of RIT, 14 of 63 patients experienced National Cancer Institute Common Toxicity Criteria grade 4 hematotoxicity; 19 patients did not receive the second course of RIT because of impaired performance status (N=5) or relapse (N=14). After the second course of RIT, 9 of 44 patients experienced National Cancer Institute Common Toxicity Criteria grade 4 hematotoxicity. Five patients developed myelodysplastic syndrome (MDS) from 22 to 55 months after their last RIT. The median TTP, OS, and CSS for all patients were 16, 55, and 60 months, respectively. The \"truly adjuvant\" patients (N=39) had an improved median TTP (not reached vs 6.1 months; hazard ratio, 0.12; P<.001), OS (75.6 vs 33.4 months; hazard ratio, 0.44; P=.014), and CSS (not reached vs 41.4 months; hazard ratio, 0.42; P=.014) compared with \" possibly nonadjuvant\" patients (N=24). CONCLUSIONS: Repeated RIT with I-131-labetuzumab is feasible but is associated with hematotoxicity. Survival is very encouraging, especially for \"truly adjuvant\" patients. However, the maximum safe dose of I-131-labetuzumab is a single administration of 50 millicuries/m(2). (C) 2016 American Cancer Society."],["dc.description.sponsorship","University Medical Center Goettingen"],["dc.identifier.doi","10.1002/cncr.30390"],["dc.identifier.isi","000396841300015"],["dc.identifier.pmid","27763687"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43229"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1097-0142"],["dc.relation.issn","0008-543X"],["dc.title","Repeated Adjuvant Anti-CEA Radioimmunotherapy After Resection of Colorectal Liver Metastases: Safety, Feasibility, and Long-Term Efficacy Results of a Prospective Phase 2 Study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Onkologie"],["dc.bibliographiccitation.volume","36"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Quack, H."],["dc.contributor.author","Sprenger, Thilo"],["dc.contributor.author","Wolff, Hendrik Andreas"],["dc.contributor.author","Binder, L."],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Lorenzen, Stephan"],["dc.contributor.author","Nietert, Manuel M."],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Liersch, Torsten"],["dc.date.accessioned","2018-11-07T09:19:02Z"],["dc.date.available","2018-11-07T09:19:02Z"],["dc.date.issued","2013"],["dc.format.extent","73"],["dc.identifier.isi","000326360900167"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28546"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Karger"],["dc.publisher.place","Basel"],["dc.relation.issn","1423-0240"],["dc.relation.issn","0378-584X"],["dc.title","5-FU dose monitoring under neoadjuvant radiochemotherapy and adjuvant chemotherapy for locally advanced rectal cancer"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","400"],["dc.bibliographiccitation.issue","4_suppl"],["dc.bibliographiccitation.journal","Journal of Clinical Oncology"],["dc.bibliographiccitation.lastpage","400"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Sprenger, Thilo"],["dc.contributor.author","Gaedcke, Jochen"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Jo, Peter"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Beissbarth, Tim"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Ghadimi, B. Michael"],["dc.contributor.author","Liersch, Torsten"],["dc.date.accessioned","2022-06-08T07:57:20Z"],["dc.date.available","2022-06-08T07:57:20Z"],["dc.date.issued","2013"],["dc.description.abstract","400 Background: The role of the potential stem cell marker CD133 as a predictive or prognostic marker in multimodal rectal cancer treatment is currently under debate. While CD133 has been identified as a prognostic marker in rectal cancers after preoperative radiochemotherapy (RCT) it was recently characterized as a very unspecific feature for colorectal cancer stem cells. We therefore analyzed the association between CD133 expression and mutations in the proto-oncogenes K-Ras and PI3K in rectal cancer patients receiving neoadjuvant RCT. Methods: CD133 expression was evaluated immunhistochemically in pre-treatment biopsies and surgical specimens of 128 patients with locally advanced rectal cancers (cUICC II/III) treated with preoperative RCT within the phase-III German Rectal Cancer Trials. K-Ras mutations were analyzed by sequencing of exons 1, 2, and 3. PI3K mutations were detected by sequencing the p110α subunit (PIK3CA) and correlated with histopathologic parameters, tumor regression and survival. Results: CD133 expression was significantly associated with mutations in the K-Ras gene in both pre-treatment biopsies and post-treatment tumor specimens in uni- and multivariate analyses. However, no significant correlation was observed between CD133 and PI3K mutations. Post-treatment CD133 levels were correlated with neoadjuvant RCT (50.4 Gy/5-FU vs. 50.4 Gy/5-FU+Ox) and tumor regression grading. Anyway, there was no significant association between pre- and post-treatment CD133 expression and disease-free survival. Conclusions: CD133 expression levels are strongly associated with mutations in the K-Ras proto-oncogene in rectal cancers before and after preoperative RCT. Our results strengthen the hypothesis that CD133 is not a specific marker for colorectal stem cells but might be integrated in proliferation pathways like the ras-raf axis."],["dc.identifier.doi","10.1200/jco.2013.31.4_suppl.400"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110058"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-575"],["dc.relation.eissn","1527-7755"],["dc.relation.issn","0732-183X"],["dc.title","Association of CD133 expression levels with the k-ras mutation status in rectal cancers before and after preoperative radiochemotherapy."],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Oncology Research and Treatment"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Homayounfar, Kia"],["dc.contributor.author","Sahlmann, Carsten-Oliver"],["dc.contributor.author","Niessner, Martin"],["dc.contributor.author","Dyczkowski, Jerzy"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Braulke, Friederike"],["dc.contributor.author","Meller, Birgit"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Meller, J."],["dc.contributor.author","Goldenberg, David M."],["dc.contributor.author","Liersch, Torsten"],["dc.date.accessioned","2018-11-07T10:20:51Z"],["dc.date.available","2018-11-07T10:20:51Z"],["dc.date.issued","2016"],["dc.format.extent","13"],["dc.identifier.isi","000371353700041"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41966"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Karger"],["dc.publisher.place","Basel"],["dc.relation.issn","2296-5262"],["dc.relation.issn","2296-5270"],["dc.title","Repeated anti-CEA radioimmunotherapy (RIT) with 131I-Labetuzumab after complete resection of colorectal liver metastases - safety, feasibility and long-term efficacy results of a prospective phase-II-study"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1463"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","International Journal of Colorectal Disease"],["dc.bibliographiccitation.lastpage","1469"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Lowes, Markus"],["dc.contributor.author","Kleiss, Mathias"],["dc.contributor.author","Lueck, Rainer"],["dc.contributor.author","Detken, Sven"],["dc.contributor.author","König, Alexander Otto"],["dc.contributor.author","Nietert, Manuel M."],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Stanek, Kathrin"],["dc.contributor.author","Langer, Claus"],["dc.contributor.author","Ghadimi, Michael B."],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Homayounfar, Kia"],["dc.date.accessioned","2019-07-09T11:44:24Z"],["dc.date.available","2019-07-09T11:44:24Z"],["dc.date.issued","2017"],["dc.description.abstract","PURPOSE: Multidisciplinary tumor boards (MDT) have been advocated as standard of care in modern oncology. German guidelines for metastasized colorectal cancer (mCRC) recommend MDT discussion of colon cancer patients after completion of primary tumor therapy but stage IV colon cancer as well as rectal cancer patients prior to any therapy. In this health care research study, we evaluated application and decisional consequences of this approach in clinical routine. METHODS: All major institutions providing oncological care in southern Lower Saxony and Northern Hesse (N = 11) were invited. Patients with mCRC diagnosed between 01/2011 and 12/2013 were eligible. Data were collected using a standardized patient report form and stored in a GCP-conform EDC-system (secuTrial®). RESULTS: A university medical center, four teaching hospitals, one communal hospital, and three oncological focus practices participated in the study. In total, 470 patients with a median age of 70 years were enrolled. Guideline conform MDT discussion was performed in 63% of operated colon cancer patients, 38% of stage IV colon cancer patients and 47% of rectal cancer patients, respectively. Resection of metastases was performed in 41% of cases. Patients ≥70 years (n = 250) received significantly more often treatment following MDT discussion (86 versus 64%, p = 0.0002). Not the resection rate (48 versus 57%, p = 0.1574) but indication for preoperative chemotherapy (57 versus 33%, p = 0.0056) significantly differed when patients with single organ metastases experienced MDT discussion. CONCLUSIONS: MDT discussion is not as established as advocated by national guidelines. Treatment decisions differ especially in older patients and those with single organ metastases."],["dc.identifier.doi","10.1007/s00384-017-2871-z"],["dc.identifier.pmid","28779354"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14738"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59003"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","The utilization of multidisciplinary tumor boards (MDT) in clinical routine: results of a health care research study focusing on patients with metastasized colorectal cancer"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]