In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.

Ex Input:
Context: Urothelial carcinoma associated 1 (UCA1) functions as an oncogene, which promotes cancer cell proliferation, invasion, and metastasis, and is responsible for drug resistance. This study aimed to determine the expression level of UCA1 in ovarian cancer and to further investigate its clinical significance.', 'The expression levels of UCA1 in ovarian cancer and normal ovaries were determined by quantitative real-time PCR. The relationship between UCA1 expression and clinical features and the prognostic value of UCA1 for overall survival were examined.', 'UCA1 expression in ovarian cancer tissues was significantly upregulated compared with normal ovarian tissues. High UCA1 expression was related to lymph node metastasis, FIGO stage, and response to chemotherapy. Kaplan-Meier analysis demonstrated that high UCA1 expression was associated with poorer overall survival in patients with ovarian cancer. Cox proportional hazards analysis showed that high UCA1 expression was an independent prognostic marker of poor outcome. This effect remained significant in the further stratification analysis.\Question: Does uCA1 overexpression predict clinical outcome of patients with ovarian cancer receiving adjuvant chemotherapy?

Ex Output:
Our findings provided the first evidence that UCA1 may serve as an indicator of response to chemotherapy and prognosis of ovarian cancer. UCA1 may play an important role in the progression of ovarian cancer.

Ex Input:
Context: The etiology of idiopathic scoliosis remains unknown, but growth is a risk factor for progression. Growth pattern differs in children with and without scoliosis. Cartilage oligomeric matrix protein (COMP) may be associated with scoliosis and growth. We, therefore, studied COMP in children with and without idiopathic scoliosis.', 'We included 105 children, with mean age 14.4 years (range 10-16), under observation or treatment for idiopathic scoliosis, and 103 children from an age-matched population-based cohort. COMP was measured in serum at the time of inclusion. Growth velocity was estimated from repeated height measurements. T tests, analysis of covariance or linear regression were used for statistical comparisons.', 'COMP was mean (SD) 11 (5) units/liter (U/L) in children with scoliosis and 13 (5) U/L in the control cohort (p = 0.005, adjusted for sex and sampling time of the day). When patients and controls were analyzed together, high COMP was correlated with high growth velocity ( = 0.19, p = 0.003). When patients and controls were analyzed separately, COMP was correlated with growth velocity in children with scoliosis ( = 0.27, p = 0.007), but not in children without scoliosis ( = 0.02, p = 0.83) (all analyses adjusted for age, sex and sampling time). Low COMP was significantly correlated with large curve size in children with scoliosis ( = -0.29, p = 0.003), but not after adjustment for age, sex and sampling time ( = -0.16; p = 0.14).\Question: Is serum level of cartilage oligomeric matrix protein lower in children with idiopathic scoliosis than in non-scoliotic controls?

Ex Output:
COMP was lower in children with idiopathic scoliosis than in a control cohort. In children with scoliosis, high COMP was modestly correlated with high growth velocity, but not with curve severity.

Ex Input:
Context: The value of performing transthoracic echocardiography (TTE) as part of the clinical assessment of patients awaiting endovascular repair of the abdominal aorta is little evaluated. We aimed to estimate the prognostic importance of information derived from TTE on long-term all-cause mortality in a selected group of patients undergoing endovascular aneurysm repair.', 'This was a retrospective cohort study of 273 consecutive patients selected for endovascular aneurysm repair. All patients included in the analysis underwent TTE before their procedure. Multivariable Cox regression analysis was used to estimate the effect of TTE measures on all-cause mortality. Over a mean follow-up of 3.21.5 years, there were 78 deaths with a mean time to death of 1.281.16 years. A greater tubular ascending aorta (hazard ratio [HR] 5.6, 95% confidence interval [CI] 2.77-11.33), presence of mitral regurgitation (HR 8.13, 95% CI 4.09-12.16), lower left ventricular ejection fraction (HR 0.96, 95% CI 0.93-0.98), younger age (HR 0.97, 95% CI 0.95-0.99), and presence of diabetes mellitus (HR 1.46, 95% CI 1.24-1.89) were predictors of all-cause mortality.\Question: Does transthoracic Echocardiography provide Important Long-Term Prognostic Information in Selected Patients Undergoing Endovascular Abdominal Aortic Repair?

Ex Output:
Echocardiography provides important long-term prognostic information in patients undergoing endovascular aneurysm repair. These TTE indices were more important at predicting outcome than standard conventional risk factors in this patient group. A greater tubular ascending aorta, presence of mitral regurgitation, reduced left ventricular ejection fraction, younger age, and diabetes mellitus were independently associated with long-term mortality.