Mateusz Jacek Spałek

Dr. Mateusz Jacek Spałek

Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

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

Representative Publications

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1 August 2019 in Annals of Oncology
Verified
Journal Article
Closed access
BCB. Ciseł
B. Ciseł
LPL. Pietrzak
L. Pietrzak
WMW. Michalski
W. Michalski
LWLucjan Wyrwicz
Lucjan Wyrwicz
ARA. Rutkowski
A. Rutkowski
KBK. Bujko
K. Bujko
This trial evaluated whether preoperative short-course radiotherapy and consolidation chemotherapy (CCT) were superior to chemoradiation in rectal cancers with clinical (c)T4 or fixed cT3. Previously, we reported early results showing no differences in the radical surgery rate (primary end point). In the short-course/CCT group, we observed lower acute toxicity of preoperative treatment and better overall survival (OS). We updated results to determine whether the benefit in OS was sustained and to evaluate late complications. Patients with cT4 or fixed cT3 rectal cancer were randomized either to preoperative 5 × 5 Gy and three cycles of FOLFOX4 or to chemoradiation (50.4 Gy with bolus 5-Fu, leucovorin and oxaliplatin). Patients (N = 515) were eligible for analysis, 261 in the short-course/CCT group and 254 in the chemoradiation group. The median follow-up was 7.0 years. The difference in OS was insignificant [hazard ratio (HR) 0.90; 95% confidence interval (CI) 0.70-1.15; P = 0.38). However, the difference in early OS favouring short-course/CCT previously reported was observed again, being 9% at 3 years (95% CI 0.5% to 17%). This difference disappeared later; at 8 years OS was 49% in both groups. There was no difference in disease-free survival (HR 0.95; 95% CI 0.75-1.19; P = 0.65) at 8 years 43% versus 41% in the short-course/CCT group versus the chemoradiation group, respectively. The corresponding values for cumulative incidences of local failure and distant metastases did not differ and were HR = 1.08, 95% CI 0.70-1.23, P = 0.60, 35% versus 32% and HR = 1.10, 95% CI 0.68-1.23, P = 0.54, 36% versus 34%, respectively. The rate of late complications was similar (P = 0.66), grade 3+ being 11% versus 9% in the short-course/CCT group versus the chemoradiation group, respectively. The superiority of preoperative short-course/CCT over chemoradiation was not demonstrated. The trial is registered as ClinicalTrials.gov number NCT00833131.

1 December 2016 in Clinical, Cosmetic and Investigational Dermatology
Verified
Journal Article
Open access
PDF file
Mateusz Jacek SpałekMateusz Jacek Spałek
Mateusz Jacek Spałek
Chronic radiation dermatitis is a late side effect of skin irradiation, which may deteriorate patients’ quality of life. There is a lack of precise data about its incidence; however, several risk factors may predispose to the development of this condition. It includes radiotherapy dose, fractionation, technique, concurrent systemic therapy, comorbidities, and personal and genetic factors. Chronic radiation dermatitis is mostly caused by the imbalance of proinflammatory and profibrotic cytokines. Clinical manifestation includes changes in skin appearance, wounds, ulcerations, necrosis, fibrosis, and secondary cancers. The most severe complication of irradiation is extensive radiation-induced fibrosis (RIF). RIF can manifest in many ways, such as skin induration and retraction, lymphedema or restriction of joint motion. Diagnosis of chronic radiation dermatitis is usually made by clinical examination. In case of unclear clinical manifestation, a biopsy and histopathological examination are recommended to exclude secondary malignancy. The most effective prophylaxis of chronic radiation dermatitis is the use of proper radiation therapy techniques to avoid unnecessary irradiation of healthy skin. Treatment of chronic radiation dermatitis is demanding. The majority of the interventions are based only on clinical practice. Telangiectasia may be treated with pulse dye laser therapy. Chronic postirradiation wounds need special dressings. In case of necrosis or severe ulceration, surgical intervention may be considered. Management of RIF should be complex. Available methods are rehabilitative care, pharmacotherapy, hyperbaric oxygen therapy, and laser therapy. Future challenges include the assessment of late skin toxicity in modern irradiation techniques. Special attention should be paid on genomics and radiomics that allow scientists and clinicians to select patients who are at risk of the development of chronic radiation dermatitis. Novel treatment methods and clinical trials are strongly needed to provide more efficacious therapies.


14 May 2021 in Cancers
Verified
Journal Article
Open access
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AZAgnieszka Zając
Agnieszka Zając
SKSylwia Kopeć
Sylwia Kopeć
BSBARTLOMIEJ SZOSTAKOWSKI
BARTLOMIEJ SZOSTAKOWSKI
Mateusz Jacek SpałekMateusz Jacek Spałek
Mateusz Jacek Spałek
MFMichal Fiedorowicz
Michal Fiedorowicz
Piotr RutkowskiPiotr Rutkowski
Piotr Rutkowski
Chondrosarcoma (CHS) is the second most common primary malignant bone sarcoma. Overall survival and prognosis of this tumor are various and often extreme, depending on histological grade and tumor subtype. CHS treatment is difficult, and surgery remains still the gold standard due to the resistance of this tumor to other therapeutic options. Considering the role of differentiation of CHS subtypes and the need to develop new treatment strategies, in this review, we introduced a multidisciplinary characterization of CHS from its pathology to therapies. We described the morphology of each subtype with the role of immunohistochemical markers in diagnostics of CHS. We also summarized the most frequently mutated genes and genome regions with altered pathways involved in the pathology of this tumor. Subsequently, we discussed imaging methods and the role of currently used therapies, including surgery and the limitations of chemo and radiotherapy. Finally, in this review, we presented novel targeted therapies, including those at ongoing clinical trials, which can be a potential future target in designing new therapeutics for patients with CHS.

Verified
Journal Article
Open access
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IPIga Płachta
Iga Płachta
MKMarcin Kleibert
Marcin Kleibert
Anna M. Czarnecka, MBAAnna M. Czarnecka, MBA
Anna M. Czarnecka, MBA
Mateusz Jacek SpałekMateusz Jacek Spałek
Mateusz Jacek Spałek
ASAnna Szumera-Cieckiewicz
Anna Szumera-Cieckiewicz
Piotr RutkowskiPiotr Rutkowski
Piotr Rutkowski
Adnexal tumors of the skin are a rare group of benign and malignant neoplasms that exhibit morphological differentiation toward one or more of the adnexal epithelium types present in normal skin. Tumors deriving from apocrine or eccrine glands are highly heterogeneous and represent various histological entities. Macroscopic and dermatoscopic features of these tumors are unspecific; therefore, a specialized pathological examination is required to correctly diagnose patients. Limited treatment guidelines of adnexal tumor cases are available; thus, therapy is still challenging. Patients should be referred to high-volume skin cancer centers to receive an appropriate multidisciplinary treatment, affecting their outcome. The purpose of this review is to summarize currently available data on pathogenesis, diagnosis, and treatment approach for apocrine and eccrine tumors.

29 August 2014 in Journal of the European Academy of Dermatology and Venereology
Verified
Journal Article
Closed access
PDF file
Mateusz Jacek SpałekMateusz Jacek Spałek
Mateusz Jacek Spałek
JJJoanna Jonska-Gmyrek
Joanna Jonska-Gmyrek
JGJ. Gałecki
J. Gałecki