Annett Kallies

Dr. Annett Kallies

Universitätsklinikum Erlangen, Erlangen, Bavaria, Germany
orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 October 2025 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
RFRainer Fietkau
Rainer Fietkau
MGMichael Ghadimi
Michael Ghadimi
RGRobert Grützmann
Robert Grützmann
UWUwe A. Wittel
Uwe A. Wittel
LJLutz Jacobasch
Lutz Jacobasch
HOHelmut Oettle
Helmut Oettle
PURPOSE: To determine the benefit, measured as complete removal of a tumor so that no tumor cells are detectable during histopathologic examination of the resection margin (R0 resection rate), of induction chemotherapy plus chemoradiotherapy (CRT) compared with chemotherapy alone for unresectable pancreatic tumors. PATIENTS AND METHODS: CONKO-007, an investigator-initiated open-label, multicentric, phase III randomized clinical trial, enrolled 525 patients with unresectable tumors, and 495 patients received induction chemotherapy (402 with fluorouracil, irinotecan, and oxaliplatin [FOLFIRINOX] and 93 with gemcitabine). Patients without progression after 3 months of induction chemotherapy (n = 336) were randomly assigned for continuation of the same chemotherapy (n = 167) or CRT (n = 169; 50.4Gy concurrently with gemcitabine). Resectability was centrally reassessed by a panel of surgeons. Surgery was recommended if possible. After an interim analysis, the primary end point was changed from overall survival (OS) to overall R0 resection rate because of slow recruitment. The median follow-up was 76 months. Important planned secondary end points were R0 resection rate in the surgically treated population and OS. RESULTS: The primary end point (overall R0 resection rate) was not significantly different between treatment arms with 25% (43 of 169) in the CRT arm versus 18% in the chemotherapy arm (30 of 167; P = .113). Secondary end point analysis showed that surgery was performed equally often ( P = .91); R0 resection rate in patients who underwent surgery was higher after CRT, 69.4% (43 of 62) compared with chemotherapy alone: 50.0% (30 of 60 patients, P = .04). Other parameters of resection (ratio of R0/R1/R2/no resection) also favored CRT ( P = .02). No difference in OS was seen between treatment arms (hazard ratio [HR], 0.937 [95% CI, 0.747 to 1.174]; P = .57; randomly assigned intention-to-treat patients). Surgery was associated with longer OS ( P < .001, HR, 0.525 [95% CI, 0.408 to 0.676]). CONCLUSION: Although not improving overall R0 resection rate or survival, CRT enables a R0 resection in surgically treated patients more often than chemotherapy alone.

30 September 2022 in Cancers
Verified
Journal Article
Open access
PDF file
MBMichael Beck
Michael Beck
SSSabine Semrau
Sabine Semrau
MHMarlen Haderlein
Marlen Haderlein
AGAntoniu Gostian
Antoniu Gostian
JHJulius Hartwich
Julius Hartwich
Markus HechtMarkus Hecht
Markus Hecht
Background: In head and neck cancer patients, parameters of metabolic and morphologic response of the tumor to single-cycle induction chemotherapy (IC) with docetaxel, cis- or carboplatin are used to decide the further course of treatment. This study investigated the effect of adding a double immune checkpoint blockade (DICB) of tremelimumab and durvalumab to IC on imaging parameters and their significance with regard to tumor cell remission. Methods: Response variables of 53 patients treated with IC+DICB (ICIT) were compared with those of 104 who received IC alone. Three weeks after one cycle, pathologic and, in some cases, clinical and endoscopic primary tumor responses were evaluated and correlated with a change in 18F-FDG PET and CT/MRI-based maximum-standardized uptake values (SUVmax) before (SUVmaxpre), after treatment (SUVmaxpost) and residually (resSUVmax in % of SUVmaxpre), and in maximum tumor diameter (Dmax) before (Dmaxpre) and after treatment (Dmaxpost) and residually (resD). Results: Reduction of SUVmax and Dmax occurred in both groups; values were SUVmaxpre: 14.4, SUVmaxpost: 6.6, Dmaxpre: 30 mm and Dmaxpost: 23 mm for ICIT versus SUVmaxpre: 16.5, SUVmaxpost: 6.4, Dmaxpre: 21 mm, and Dmaxpost: 16 mm for IC alone (all p < 0.05). ResSUVmax was the best predictor of complete response (IC: AUC: 0.77; ICIT: AUC: 0.76). Metabolic responders with resSUVmax ≤ 40% tended to have a higher rate of CR to ICIT (88%; n = 15/17) than to IC (65%; n = 30/46; p = 0.11). Of the metabolic nonresponders (resSUVmax > 80%), 33% (n = 5/15) achieved a clinical CR to ICIT versus 6% (n = 1/15) to IC (p = 0.01). Conclusions: ICIT and IC quickly induce a response and 18F-FDG PET is the more accurate modality for identifying complete remission. The rate of discrepant response, i.e., pCR with metabolic nonresponse after ICIT was >30%.

11 August 2022 in Healthcare
Verified
Journal Article
Open access
PDF file
IDIrene Dennison
Irene Dennison
CSClaudia Schweizer
Claudia Schweizer
TFTim Fitz
Tim Fitz
DBDaniel Blasko
Daniel Blasko
CSChristopher Sörgel
Christopher Sörgel
Luitpold DistelLuitpold Distel
Luitpold Distel
The aim of this study was to analyze the quality of life of patients with advanced rectal cancer before and during the COVID-19 pandemic and to determine whether the pandemic affected patients’ quality of life. The study included 389 patients and was performed from May 2010 to June 2021. The fifteen months from March 2020 to June 2021 were categorized as the COVID-19 period. Patients were surveyed using the QLQ-C30 and QLQ-CR38 questionnaires. The questionnaires were used at different phases of radiochemotherapy: prior to RCT (day 1), during RCT (day 14), at the end of RCT (day 35), and prior to mesorectal surgery (day 70). Scores were formed from the questions. In addition, scores were analyzed for different age groups (64) and sexes (female and male). Overall, patients reported lower functional scores and higher symptom scores during the pandemic than before the pandemic. Although it had been expected that older and younger patients would differ clearly, there were only minor differences. The comparison between the two sexes showed very different scores, with female patients having lower functional scores and higher symptom scores than male patients before and especially during COVID-19. In conclusion, age does not play a major role in quality of life, but sex does play an important role in perception of functioning and symptoms. COVID-19 also had a major impact on patients’ lives, as it was a very isolating and stressful time for everyone, especially cancer patients, which was reflected in worsening scores.

8 July 2023 in Healthcare
Verified
Journal Article
Open access
PDF file
DBDaniel Blasko
Daniel Blasko
CSClaudia Schweizer
Claudia Schweizer
TFTim Fitz
Tim Fitz
CSChristoph Schröter
Christoph Schröter
CSChristopher Sörgel
Christopher Sörgel
Luitpold DistelLuitpold Distel
Luitpold Distel
Colorectal cancer remains one of the most commonly diagnosed cancers. Advanced rectal cancer patients receive neoadjuvant radiochemotherapy as well as surgery and suffer from reduced health-related quality of life due to various side effects. We were interested in the role of the COVID-19 pandemic and how it affected those patients’ quality of life. A total of 489 advanced rectal cancer patients from the University Hospital Erlangen in Germany were surveyed between May 2010 and March 2022 and asked to fill out the EORTC QLQ-C30 and QLQ-CR38 questionnaires over eight different time points: at the beginning, during and after radiochemotherapy, right before surgery, and in yearly intervals after surgery for up to four years. Answers were converted to scores to compare the COVID-19 period to the time before March 2020, focusing on the follow-ups, the developments over time—including by sex and age—and the influence of the TNM cT-stage. Overall, a trend of impaired functional and symptom scores was found across all surveys with few significances (body image −10.6 percentage points (pp) after one year; defecation problems +13.5 pp, insomnia +10.2 pp and weight loss +9.8 pp after three years; defecation problems +11.3 pp after four years). cT4-stage patients lost significantly more weight than their cT1-3-stage counterparts (+10.7 to 13.7 pp). Further studies should be conducted to find possible causes and develop countermeasures for future major infectious diseases.

5 May 2023 in Preprints.org
Verified
Preprint
Open access
DBDaniel Anton Blasko
Daniel Anton Blasko
CSClaudia Schweizer
Claudia Schweizer
TFTim Fitz
Tim Fitz
CSChristoph Schröter
Christoph Schröter
CSChristopher Sörgel
Christopher Sörgel
Luitpold DistelLuitpold Distel
Luitpold Distel
Colorectal cancer remains one of the most commonly diagnosed cancers. Advanced rectal cancer patients receive neoadjuvant radiochemotherapy as well as surgery and suffer under reduced health-related quality of life due to various side effects. We were interested in the role of the COVID-19 pandemic and how it affected those patients’ quality of life. A total of 489 advanced rectal cancer patients from the University Hospital Erlangen in Germany were surveyed between May 2010 and March 2022 and asked to fill out the EORTC QLQ-C30 and QLQ-CR38 questionnaire over eight different time points: in the beginning, during and after radiochemotherapy, right before surgery and in yearly intervals after surgery for up to four years. Answers were converted to scores to compare the COVID-19 period to the time before March 2020 focusing on the follow-ups, the developments over time – including by sex and age - and the influence of the TNM cT-stage. Overall, a trend of impaired functional and symptom scores was found across all surveys with few significances (body image -10.6 percentage points (pp) after one year; defecation problems +13.5 pp, insomnia +10.2 pp and weight loss +9.8 pp after three years; defecation problems +11.3 pp after four years). cT4-stage patients lost significantly more weight than their cT1-3-stage counterparts (+10.7 to 13.7 pp). Further studies should be conducted to find possible causes and develop countermeasures for future major infectious diseases.

23 October 2024 in Healthcare
Verified
Journal Article
Open access
PDF file
ADAilina Doelz
Ailina Doelz
DBDaniel Blasko
Daniel Blasko
CSClaudia Schweizer
Claudia Schweizer
TFTim Fitz
Tim Fitz
AKAnnett Kallies
Annett Kallies
Luitpold DistelLuitpold Distel
Luitpold Distel
Background/Objectives: Advanced rectal cancer is one of the most common cancers worldwide and has a significant impact on public health. Because favorable and long-term survival has been achieved with multimodal therapy, patient quality of life is very important. The intention of this study was to assess patients’ quality of life using various functioning and symptom scores from the years 2010 to 2022 and to examine changes over time. Methods: Data on health-related quality of life were collected from rectal cancer patients treated at the University Hospital Erlangen in Germany over a period of 13 years. The EORTC QLQ-C30 questionnaire and the rectal cancer-specific module QLQ-CR38 were completed in this study by a total of 516 patients. The questionnaires were collected before, during and at annual follow-up visits after treatment. Statistical significance was defined as p-values < 0.05 as well as a difference of 10 or more percentage points. Results: The deterioration in scores is most pronounced immediately after radiochemotherapy, especially for pain (+19.8 pp), fatigue (+16.1 pp) and diarrhoea (+24.8 pp). One year after the end of therapy, most of the values are again comparable to or better than those of the German general population and only role functioning (−19.8 pp), social functioning (−24.6 pp), diarrhoea (−21.6 pp) and financial difficulties (−16.3 pp) are considerably worse. Some baselines deteriorate clearly over time from 2010 to 2022; these are role functioning (−23.9 pp), social functioning (−17.3 pp), body image (−15.2 pp), fatigue (+13.8 pp) and nausea and vomiting (+10.5 pp). Conclusions: An improvement in therapy in terms of a reduction in side effects and, thus, an improvement in quality of life over time could not be proven. The deterioration in individual scores over time does not appear to be a problem specific to rectal cancer patients, but rather, is associated with social developments or systemic healthcare factors in German society that are not directly related to oncological diseases.