@article{CerezoEchevarriaKehlBeitzingeretal.2023, author = {Cerezo-Echevarria, Argi{\~n}e and Kehl, Alexandra and Beitzinger, Christoph and M{\"u}ller, Tobias and Klopfleisch, Robert and Aupperle-Lellbach, Heike}, title = {Evaluating the histologic grade of digital squamous cell carcinomas in dogs and copy number variation of KIT Ligand — a correlation study}, series = {Veterinary Sciences}, volume = {10}, journal = {Veterinary Sciences}, number = {2}, issn = {2306-7381}, doi = {10.3390/vetsci10020088}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-304824}, year = {2023}, abstract = {Dark-haired dogs are predisposed to the development of digital squamous cell carcinoma (DSCC). This may potentially suggest an underlying genetic predisposition not yet completely elucidated. Some authors have suggested a potential correlation between the number of copies KIT Ligand (KITLG) and the predisposition of dogs to DSCC, containing a higher number of copies in those affected by the neoplasm. In this study, the aim was to evaluate a potential correlation between the number of copies of the KITLG and the histological grade of malignancy in dogs with DSCC. For this, 72 paraffin-embedded DSCCs with paired whole blood samples of 70 different dogs were included and grouped according to their haircoat color as follow: Group 0/unknown haircoat color (n = 11); Group 1.a/black non-Schnauzers (n = 15); group 1.b/black Schnauzers (n = 33); group 1.c/black and tan dogs (n = 7); group 2/tan animals (n = 4). The DSCCs were histologically graded. Additionally, KITLG Copy Number Variation (CNV) was determined by ddPCR. A significant correlation was observed between KITLG copy number and the histological grade and score value. This finding may suggest a possible factor for the development of canine DSCC, thus potentially having an impact on personalized veterinary oncological strategies and breeding programs.}, language = {en} } @article{ConradKehlMuelleretal.2023, author = {Conrad, David and Kehl, Alexandra and M{\"u}ller, Tobias and Klopfleisch, Robert and Aupperle-Lellbach, Heike}, title = {Immunohistochemical and molecular genetic analysis of canine digital mast cell tumours}, series = {Animals}, volume = {13}, journal = {Animals}, number = {10}, issn = {2076-2615}, doi = {10.3390/ani13101694}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-319199}, year = {2023}, abstract = {Grading, immunohistochemistry and c-kit mutation status are criteria for assessing the prognosis and therapeutic options of canine cutaneous mast cell tumours (MCTs). As a subset, canine digital MCTs have rarely been explored in this context. Therefore, in this retrospective study, 68 paraffin-embedded canine digital MCTs were analysed, and histological grading was assessed according to Patnaik and Kiupel. The immunohistochemical markers KIT and Ki67 were used, as well as polymerase chain reaction (PCR) for mutational screening in c-kit exons 8, 9, 11 and 14. Patnaik grading resulted in 22.1\% grade I, 67.6\% grade II and 10.3\% grade III tumours. Some 86.8\% of the digital MCTs were Kiupel low-grade. Aberrant KIT staining patterns II and III were found in 58.8\%, and a count of more than 23 Ki67-positive cells in 52.3\% of the cases. Both parameters were significantly associated with an internal tandem duplication (ITD) in c-kit exon 11 (12.7\%). French Bulldogs, which tend to form well-differentiated cutaneous MCTs, had a higher proportion of digital high-grade MCTs and ITD in c-kit exon 11 compared with mongrels. Due to its retrospective nature, this study did not allow for an analysis of survival data. Nevertheless, it may contribute to the targeted characterisation of digital MCTs.}, language = {en} } @phdthesis{Schnaidt2007, author = {Schnaidt, Ulrike}, title = {Das Plattenepithelkarzinom der Mundh{\"o}hle. Eine retrospektive Analyse der Therapieergebnisse und {\"U}berlebensraten bei neoadjuvanter Behandlung des W{\"u}rzburger Patientenkollektivs aus den Jahren 1993-2007}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-28006}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2007}, abstract = {In einem Zeitraum zwischen 1993 und 2007 wurden an der Klinik f{\"u}r Mund-, Kiefer-, und Gesichtschirurgie der Universit{\"a}t W{\"u}rzburg insgesamt 140 Patienten mit einem prim{\"a}ren Plattenepithelkarzinom der Oropharynxregion in eine retrospektive Studie einbezogen. Grundvoraussetzung war, dass alle Patienten eine neoadjuvante, pr{\"a}operative Radiochemotherapie mit einer Gesamtstrahlendosis von 40 Gy {\"u}ber 4 Wochen erhielten. Parallel zu den ersten 5 Bestrahlungstagen wurden den Patienten 60 mg/m² K{\"o}rperoberfl{\"a}che Carboplatin verabreicht. Ziel der Studie war, die Ergebnisse und {\"U}berlebensraten dieser multimodalen Therapie zu erforschen. Das Durchschnittsalter des Gesamtpatientengutes lag bei 55,6 Jahren, das Verh{\"a}ltnis zwischen M{\"a}nnern und Frauen betrug 4,4:1. Mit 37,9\% war die h{\"a}ufigste Tumorlokalisation der Mundboden. In 83,3\% der F{\"a}lle war das Plattenepithelkarzinom verhornend und zu 72,9\% m{\"a}ßig differenziert (G2). T4 Tumoren traten mit 52,1\% am h{\"a}ufigsten auf. Klinisch wurden 62,1\% pathologische Lymphknoten diagnostiziert. Nach der neoadjuvanten Radiochemotherapie wurde bei allen Patienten eine Operation durchgef{\"u}hrt. Pathohistologisch konnten 93,6\% R0-Resektionen nachgewiesen werden. Im weiteren Krankheitsverlauf erlitten 36,4\% der Patienten ein Rezidiv. Die 5-Jahres{\"u}berlebensrate der tumorassoziiert Verstorbenen betrug 64,1\%. Einen signifikanten Einfluss auf das {\"U}berleben zeigten das pT-Stadium (p< 0,01), das pN-Stadium (p< 0,01), das Grading (p= 0,031), die R0-Resektion (p< 0,01) sowie das Auftreten der Rezidive (p< 0,01). Beim {\"U}berlebensvergleich mit aktuellen Studien konnte diese signifikante Prognoseverbesserung best{\"a}tigt werden.}, subject = {Plattenepithelcarcinom}, language = {de} }