Dimitrijević, Ivan

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  • Dimitrijević, Ivan (3)
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Author's Bibliography

Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing

Perić, Jelena; Pavlović, Dunja; Dragičević, Sandra; Miladinov, Marko; Djikić-Rom, Aleksandra; Bjelanović, Jasna; Kovač, Jelena; Despotović, Jovana; Babić, Tamara; Rosic, Jovana; Dimitrijević, Ivan; Marković, Velimir; Barisic, Goran; Nikolić, Aleksandra

(2023)

TY  - CONF
AU  - Perić, Jelena
AU  - Pavlović, Dunja
AU  - Dragičević, Sandra
AU  - Miladinov, Marko
AU  - Djikić-Rom, Aleksandra
AU  - Bjelanović, Jasna
AU  - Kovač, Jelena
AU  - Despotović, Jovana
AU  - Babić, Tamara
AU  - Rosic, Jovana
AU  - Dimitrijević, Ivan
AU  - Marković, Velimir
AU  - Barisic, Goran
AU  - Nikolić, Aleksandra
PY  - 2023
UR  - https://2023.eshg.org/
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/2061
AB  - The cornerstone in the treatment of locally advanced rectal cancer (LARC) is neoadjuvant
chemoradiotherapy (nCRT) followed by total mesorectal excision. Reliable predictors of
response to nCRT in LARC remain an unmet need in colorectal cancer research. This study
used high throughput DNA analysis to investigate genetic differences between highly
responsive tumors and tumors resistant to nCRT.
C3  - ESHG 2023
T1  - Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing
UR  - https://hdl.handle.net/21.15107/rcub_imagine_2061
ER  - 
@conference{
author = "Perić, Jelena and Pavlović, Dunja and Dragičević, Sandra and Miladinov, Marko and Djikić-Rom, Aleksandra and Bjelanović, Jasna and Kovač, Jelena and Despotović, Jovana and Babić, Tamara and Rosic, Jovana and Dimitrijević, Ivan and Marković, Velimir and Barisic, Goran and Nikolić, Aleksandra",
year = "2023",
abstract = "The cornerstone in the treatment of locally advanced rectal cancer (LARC) is neoadjuvant
chemoradiotherapy (nCRT) followed by total mesorectal excision. Reliable predictors of
response to nCRT in LARC remain an unmet need in colorectal cancer research. This study
used high throughput DNA analysis to investigate genetic differences between highly
responsive tumors and tumors resistant to nCRT.",
journal = "ESHG 2023",
title = "Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing",
url = "https://hdl.handle.net/21.15107/rcub_imagine_2061"
}
Perić, J., Pavlović, D., Dragičević, S., Miladinov, M., Djikić-Rom, A., Bjelanović, J., Kovač, J., Despotović, J., Babić, T., Rosic, J., Dimitrijević, I., Marković, V., Barisic, G.,& Nikolić, A.. (2023). Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing. in ESHG 2023.
https://hdl.handle.net/21.15107/rcub_imagine_2061
Perić J, Pavlović D, Dragičević S, Miladinov M, Djikić-Rom A, Bjelanović J, Kovač J, Despotović J, Babić T, Rosic J, Dimitrijević I, Marković V, Barisic G, Nikolić A. Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing. in ESHG 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_imagine_2061 .
Perić, Jelena, Pavlović, Dunja, Dragičević, Sandra, Miladinov, Marko, Djikić-Rom, Aleksandra, Bjelanović, Jasna, Kovač, Jelena, Despotović, Jovana, Babić, Tamara, Rosic, Jovana, Dimitrijević, Ivan, Marković, Velimir, Barisic, Goran, Nikolić, Aleksandra, "Genetic determinants of response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer identified by whole exome sequencing" in ESHG 2023 (2023),
https://hdl.handle.net/21.15107/rcub_imagine_2061 .

Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara

Nikolić, Aleksandra; Krnjajić, Mina; Marković, Velimir; Barišić, Goran; Dimitrijević, Ivan; Krivokapić, Zoran

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2021)

TY  - JOUR
AU  - Nikolić, Aleksandra
AU  - Krnjajić, Mina
AU  - Marković, Velimir
AU  - Barišić, Goran
AU  - Dimitrijević, Ivan
AU  - Krivokapić, Zoran
PY  - 2021
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1413
AB  - Uvod/Cilj. Hirurški registri i baze podataka su posebno vredni za praćenje karakteristika lečenja i otkrivanje potencijalnih problema kod karcinoma. Za bolesnike sa kolorektalnim karcinomom (KRK) u Srbiji, podaci o primljenoj terapiji, faktorima koji mogu imati uticaja na ishod, odnosno da li je lečenje uspešno i odgovarajuće ili ne, trenutno nisu sistematizovano obrađeni. Cilj rada bio je uspostavljanje baze usaglašenih podataka o hirurškom lečenju KRK u različitim državnim bolnicama širom Srbije i procena ishoda operativnog lečenja obolelih od KRK u periodu od 2010. do 2014. godine. Metode. Istraživanjem su obuhvaćena 52 državna hirurška centra u Srbiji u kojima su sakupljani brojčani podaci o bolesnicima podvrgnutim hirurškoj resekciji KRK. Kreirana je elektronska baza podataka pod nadzorom Prve hirurške klinike Kliničkog centra Srbije, Beograd. Podaci su nezavisno sakupljani korišćenjem posebno sastavljenog standardizovanog upitnika koji je uključio broj operisanih bolesnika, lokalizaciju primarnog tumora, tip hirurške intervencije, urgentnost zahvata i postoperativni mortalitet. Rezultati. Ukupno 22 037 kolorektalnih hirurških procedura izvedeno je u Srbiji u periodu od 2010. do 2014. godine (približno 4 400 godišnje) od čega je bilo 78,5% elektivnih, a 21,5% urgentnih operacija. Najčešći uzrok urgentnih operacija bio je ileus (3 618 bolesnika, 76,4%), dok su manje česti uzroci bili perforacija (899 bolesnika, 18,9%) i krvarenje (216 bolesnika, 4,5%). Postoperativna smrtnost tokom perioda istraživanja, izražena kao procenat svih KRK intervencija, iznosila je prosečno 2,8% sa diskretnom tendencijom rasta. Na kraju studijskog perioda, 127 lekara je bilo obučeno za obavljanje kolonoskopije. Zaključak. Glavni ishod istraživanja bilo je uspostavljanje neophodnih preduslova za multicentrično sakupljanje podataka koji uključuje veliki broj obolelih od KRK. Studija je podržala pretpostavku da je razvoj nacionalne baze podataka hirurškog lečenja KRK dostižan i da može obezbediti značajan uvid u rutinsko hirurško lečenje KRK u Srbiji i doprineti uvećanju resursa za buduća istraživanja.
AB  - Background/Aim. Surgical registries and databases are especially valuable in monitoring the performances in cancer treatment and detecting potential problems. For Serbian patients with colorectal cancer (CRC), data regarding the treatment received, the factors that may impact the outcome, and whether or not treatment is successful and appropriate are not currently captured. The aim of this study was to establish a collection of a consensus dataset capturing surgical treatment of CRC at multiple public hospitals across Serbia and estimate outcome in CRC patients subjected to surgical treatment in the period 2010-2014. Methods. The study encompassed all 52 public CRC surgical units in Serbia. Numerical data on all patients who underwent operative CRC resection were included. An electronic database was created and overseen by the First Surgical Clinic of the Clinical Center of Serbia, Belgrade. Data were collected independently using a specifically designed standardized questionnaire, including the number of operated patients, localization of the primary tumor, type of surgical intervention, type and urgency of surgical intervention, and postoperative mortality. Results. A total number of 22,037 colorectal surgical procedures was performed in Serbia in the period 2010-2014 (approximately 4,400 per year). It was shown that 78.5% of the total number of procedures were elective and 21.5% were emergency. The most common cause of emergency surgeries was ileus (3,618 cases, 76.4%), while the less common causes were perforation (899 cases, 18.9%) and bleeding (216 cases, 4.5%). Postoperative mortality during the study period expressed as a percentage of all interventions for CRC was 2.8% on average with a slight increasing tendency. At the end of the study period, 127 doctors were educated for performing colonoscopy. Conclusion. The main outcome of this study was the establishment of the necessary preconditions for the multicenter data collection involving large numbers of CRC patients. The study supported the premise that the development of the national database for surgical treatment of CRC is achievable and could provide valuable insight into the routine surgical management of CRC in Serbia, creating a significant resource for further research.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara
T1  - Colorectal cancer surgery in Serbia 2010-2014: An evaluation of a multicenter registry
EP  - 444
IS  - 4
SP  - 440
VL  - 78
DO  - 10.2298/VSP190610080N
ER  - 
@article{
author = "Nikolić, Aleksandra and Krnjajić, Mina and Marković, Velimir and Barišić, Goran and Dimitrijević, Ivan and Krivokapić, Zoran",
year = "2021",
abstract = "Uvod/Cilj. Hirurški registri i baze podataka su posebno vredni za praćenje karakteristika lečenja i otkrivanje potencijalnih problema kod karcinoma. Za bolesnike sa kolorektalnim karcinomom (KRK) u Srbiji, podaci o primljenoj terapiji, faktorima koji mogu imati uticaja na ishod, odnosno da li je lečenje uspešno i odgovarajuće ili ne, trenutno nisu sistematizovano obrađeni. Cilj rada bio je uspostavljanje baze usaglašenih podataka o hirurškom lečenju KRK u različitim državnim bolnicama širom Srbije i procena ishoda operativnog lečenja obolelih od KRK u periodu od 2010. do 2014. godine. Metode. Istraživanjem su obuhvaćena 52 državna hirurška centra u Srbiji u kojima su sakupljani brojčani podaci o bolesnicima podvrgnutim hirurškoj resekciji KRK. Kreirana je elektronska baza podataka pod nadzorom Prve hirurške klinike Kliničkog centra Srbije, Beograd. Podaci su nezavisno sakupljani korišćenjem posebno sastavljenog standardizovanog upitnika koji je uključio broj operisanih bolesnika, lokalizaciju primarnog tumora, tip hirurške intervencije, urgentnost zahvata i postoperativni mortalitet. Rezultati. Ukupno 22 037 kolorektalnih hirurških procedura izvedeno je u Srbiji u periodu od 2010. do 2014. godine (približno 4 400 godišnje) od čega je bilo 78,5% elektivnih, a 21,5% urgentnih operacija. Najčešći uzrok urgentnih operacija bio je ileus (3 618 bolesnika, 76,4%), dok su manje česti uzroci bili perforacija (899 bolesnika, 18,9%) i krvarenje (216 bolesnika, 4,5%). Postoperativna smrtnost tokom perioda istraživanja, izražena kao procenat svih KRK intervencija, iznosila je prosečno 2,8% sa diskretnom tendencijom rasta. Na kraju studijskog perioda, 127 lekara je bilo obučeno za obavljanje kolonoskopije. Zaključak. Glavni ishod istraživanja bilo je uspostavljanje neophodnih preduslova za multicentrično sakupljanje podataka koji uključuje veliki broj obolelih od KRK. Studija je podržala pretpostavku da je razvoj nacionalne baze podataka hirurškog lečenja KRK dostižan i da može obezbediti značajan uvid u rutinsko hirurško lečenje KRK u Srbiji i doprineti uvećanju resursa za buduća istraživanja., Background/Aim. Surgical registries and databases are especially valuable in monitoring the performances in cancer treatment and detecting potential problems. For Serbian patients with colorectal cancer (CRC), data regarding the treatment received, the factors that may impact the outcome, and whether or not treatment is successful and appropriate are not currently captured. The aim of this study was to establish a collection of a consensus dataset capturing surgical treatment of CRC at multiple public hospitals across Serbia and estimate outcome in CRC patients subjected to surgical treatment in the period 2010-2014. Methods. The study encompassed all 52 public CRC surgical units in Serbia. Numerical data on all patients who underwent operative CRC resection were included. An electronic database was created and overseen by the First Surgical Clinic of the Clinical Center of Serbia, Belgrade. Data were collected independently using a specifically designed standardized questionnaire, including the number of operated patients, localization of the primary tumor, type of surgical intervention, type and urgency of surgical intervention, and postoperative mortality. Results. A total number of 22,037 colorectal surgical procedures was performed in Serbia in the period 2010-2014 (approximately 4,400 per year). It was shown that 78.5% of the total number of procedures were elective and 21.5% were emergency. The most common cause of emergency surgeries was ileus (3,618 cases, 76.4%), while the less common causes were perforation (899 cases, 18.9%) and bleeding (216 cases, 4.5%). Postoperative mortality during the study period expressed as a percentage of all interventions for CRC was 2.8% on average with a slight increasing tendency. At the end of the study period, 127 doctors were educated for performing colonoscopy. Conclusion. The main outcome of this study was the establishment of the necessary preconditions for the multicenter data collection involving large numbers of CRC patients. The study supported the premise that the development of the national database for surgical treatment of CRC is achievable and could provide valuable insight into the routine surgical management of CRC in Serbia, creating a significant resource for further research.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara, Colorectal cancer surgery in Serbia 2010-2014: An evaluation of a multicenter registry",
pages = "444-440",
number = "4",
volume = "78",
doi = "10.2298/VSP190610080N"
}
Nikolić, A., Krnjajić, M., Marković, V., Barišić, G., Dimitrijević, I.,& Krivokapić, Z.. (2021). Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 78(4), 440-444.
https://doi.org/10.2298/VSP190610080N
Nikolić A, Krnjajić M, Marković V, Barišić G, Dimitrijević I, Krivokapić Z. Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara. in Vojnosanitetski pregled. 2021;78(4):440-444.
doi:10.2298/VSP190610080N .
Nikolić, Aleksandra, Krnjajić, Mina, Marković, Velimir, Barišić, Goran, Dimitrijević, Ivan, Krivokapić, Zoran, "Hirurško lečenje kolorektalnog karcinoma u Srbiji od 2010. do 2014. godine - procena registara više centara" in Vojnosanitetski pregled, 78, no. 4 (2021):440-444,
https://doi.org/10.2298/VSP190610080N . .
1

Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer

Nikolić, Aleksandra; Vlajnić, Marina; Ristanović, Momcilo; Petrović, Jelena; Dimitrijević, Ivan; Krivokapić, Zoran; Radojković, Dragica

(Balkan Union of Oncology (B.U.ON.), 2017)

TY  - JOUR
AU  - Nikolić, Aleksandra
AU  - Vlajnić, Marina
AU  - Ristanović, Momcilo
AU  - Petrović, Jelena
AU  - Dimitrijević, Ivan
AU  - Krivokapić, Zoran
AU  - Radojković, Dragica
PY  - 2017
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1036
AB  - Purpose: To analyze if cell free (cf)DNA levels and the presence of KRAS and BRAF mutations in serum could be used as diagnostic biomarkers in patients with primary colorectal cancer (CRC). Methods: This study included 92 individuals who were operated due to primary CRC (N=52;study group) and to hemorrhoids (N=40;control group). Serum cfDNA levels were measured with real-time PCR (RT-PCR) using PicoGreen dsDNA quantitation reagent. Colorectal tissue and related blood and serum samples taken at the time of surgery were subjected to DNA extraction and analysis of KRAS and BRAF mutations based on multiplex SNaPshot assay and DNA sequencing. Results: The average cfDNA concentration was lower in patients of the study group (20 +/- 7 ng/mu L) in comparison to controls (34 +/- 9 ng/mu L) and this difference was statistically significant (p lt 0.001). The SNaPshot analysis detected KRAS c35 mutations in colorectal tumor tissue in 14 cases, but the presence of the mutation was not confirmed in cfD-NA extracted from blood samples of these patients. Conclusions: The level of serum cfDNA in CRC is decreased in comparison to patients with hemorrhoids, which questions the usefulness of cfDNA as cancer biomarker. Also, cfDNA does not appear to be suitable as a source for mutation detection in this disease.
PB  - Balkan Union of Oncology (B.U.ON.)
T2  - Journal of Buon
T1  - Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer
EP  - 183
IS  - 1
SP  - 178
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_imagine_1036
ER  - 
@article{
author = "Nikolić, Aleksandra and Vlajnić, Marina and Ristanović, Momcilo and Petrović, Jelena and Dimitrijević, Ivan and Krivokapić, Zoran and Radojković, Dragica",
year = "2017",
abstract = "Purpose: To analyze if cell free (cf)DNA levels and the presence of KRAS and BRAF mutations in serum could be used as diagnostic biomarkers in patients with primary colorectal cancer (CRC). Methods: This study included 92 individuals who were operated due to primary CRC (N=52;study group) and to hemorrhoids (N=40;control group). Serum cfDNA levels were measured with real-time PCR (RT-PCR) using PicoGreen dsDNA quantitation reagent. Colorectal tissue and related blood and serum samples taken at the time of surgery were subjected to DNA extraction and analysis of KRAS and BRAF mutations based on multiplex SNaPshot assay and DNA sequencing. Results: The average cfDNA concentration was lower in patients of the study group (20 +/- 7 ng/mu L) in comparison to controls (34 +/- 9 ng/mu L) and this difference was statistically significant (p lt 0.001). The SNaPshot analysis detected KRAS c35 mutations in colorectal tumor tissue in 14 cases, but the presence of the mutation was not confirmed in cfD-NA extracted from blood samples of these patients. Conclusions: The level of serum cfDNA in CRC is decreased in comparison to patients with hemorrhoids, which questions the usefulness of cfDNA as cancer biomarker. Also, cfDNA does not appear to be suitable as a source for mutation detection in this disease.",
publisher = "Balkan Union of Oncology (B.U.ON.)",
journal = "Journal of Buon",
title = "Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer",
pages = "183-178",
number = "1",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_imagine_1036"
}
Nikolić, A., Vlajnić, M., Ristanović, M., Petrović, J., Dimitrijević, I., Krivokapić, Z.,& Radojković, D.. (2017). Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer. in Journal of Buon
Balkan Union of Oncology (B.U.ON.)., 22(1), 178-183.
https://hdl.handle.net/21.15107/rcub_imagine_1036
Nikolić A, Vlajnić M, Ristanović M, Petrović J, Dimitrijević I, Krivokapić Z, Radojković D. Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer. in Journal of Buon. 2017;22(1):178-183.
https://hdl.handle.net/21.15107/rcub_imagine_1036 .
Nikolić, Aleksandra, Vlajnić, Marina, Ristanović, Momcilo, Petrović, Jelena, Dimitrijević, Ivan, Krivokapić, Zoran, Radojković, Dragica, "Cell-free DNA as biomarker and source for mutation detection in primary colorectal cancer" in Journal of Buon, 22, no. 1 (2017):178-183,
https://hdl.handle.net/21.15107/rcub_imagine_1036 .
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