Virtual Library
Start Your Search
J. Furák
Author of
-
+
P2.01 - Poster Session with Presenters Present (ID 461)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Biology/Pathology
- Presentations: 1
- Moderators:
- Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)
-
+
P2.01-039 - Prognostic Significance of Claudin Protein Expression in Histological Subtypes of Non-Small Cell Lung Cancer (ID 5947)
14:30 - 14:30 | Author(s): J. Furák
- Abstract
Background:
We have investigated the correlation between claudin (CLDN) protein expression and clinicopathological parameters as well as survival in histological subtypes of non-small cell lung cancer.
Methods:
137 pathologic stage I primary bronchial cancers including 49 adenocarcinomas of non-lepidic variants (ADC), 46 adenocarcinomas of lepidic variants (L-ADC), and 42 squamous cell carcinomas (SCC) were examined. Immunohistochemistry (IHC) using antibodies against CLDN1,-2,-3,-4,-7 proteins as well as semiquantitative estimation (IHC scores 0-5) were performed on archived surgical resection specimens.
Results:
Claudin IHC scores of L-ADC differed significantly from ADC (CLDN1: p=0.009, CLDN2: p=0.005, CLDN3: p=0.004, CLDN4: p=0.001, CLDN7: p<0.001, respectively) and SCC (CLDN1: p<0.001, CLDN3: p<0.001, CLDN7: p<0.001, respectively). Highly significant CLDN3-CLDN4 parallel expression could be demonstrated in ADC and L-ADC (p<0.001 in both), which was not observed in SCC (p=0.131). ADC and SCC showed no correlation with smoking, whereas in case of L-ADC heavier smoking correlated with higher CLDN3 expression (p=0.020). Regarding claudin expression and survival, in SCC significant correlation could be demonstrated between CLDN1 IHC positivity and better survival (p=0.038). In NSCLC as a whole, high CLDN2 expression proved to be a better prognostic factor when compared with cases where CLDN2 IHC score was 0-1 vs. 2-5 (p=0.009), however, when analyzed separately, none of the histological subgroups showed correlation between CLDN2 expression and overall survival.
Conclusion:
Our results demonstrated significant claudin expression differences not only between the SCC–ADC and SCC–L-ADC but also between the L-ADC and ADC histological subgroups, which strongly underlines that L-ADC represents a distinct entity within the ADC group. CLDN1 overexpression is a good prognostic factor in NSCLC, but only in the SCC subgroup.
-
+
P2.03b - Poster Session with Presenters Present (ID 465)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)
-
+
P2.03b-005 - Correlation between Primary Tumor Location and Brain Metastasis Development or Peritumoral Brain Edema in Lung Cancer (ID 5913)
14:30 - 14:30 | Author(s): J. Furák
- Abstract
Background:
In lung cancer overall survival and quality of life are affected adversely by brain metastases, while peritumoral brain edema is responsible for life-threatening complications.
Methods:
The clinicopathological and cerebral radiological data of 575 consecutive lung cancer patients with brain metastases were analyzed retrospectively.
Results:
In squamous cell carcinoma (SCC) and adenocarcinoma (ADC) peritumoral brain edema was more pronounced as compared with small cell lung cancer (SCLC) (p<0.001, p˂0.001, respectively). There was positive correlation between size of metastasis and thickness of peritumoral brain edema (p<0.001). It was thicker in supratentorial tumors (p=0.019), in younger patients (≤50 years) (p=0.042), and in females (p=0.016). The interval time to brain metastasis was shorter in case of central as compared with peripheral lung cancer (5.3 vs. 9.0 months, p=0.035). Early brain metastasis was characteristic for ADCs. A total of 135 patients had brain only metastases (N0 disease) characterized by peripheral lung cancer predominance (p<0.001), and longer time-to-metastasis interval (9.2 vs. 4.4 months, p<0.001). Overall survival was longer in the brain only subgroup than in patients with N1-3 diseases (p˂0.001).
Conclusion:
According to our results, clinicopathological characteristics of lung cancer are related to the development and radiographic features of brain metastases, and these findings might be helpful in selecting patients who could benefit from prophylactic cranial irradiation.
