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Discover 10,048 clinical trials near Portland, Oregon. Find research studies in your area.
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NCT01945866
Although anti-vascular endothelial growth factor (VEGF) therapy is generally effective as treatment for center-involved diabetic macular edema (DME), a substantial proportion of anti-VEGF-treated eyes with DME do not achieve vision of 20/20 or complete resolution of retinal thickening. Indeed, over 50% of ranibizumab-treated eyes did not achieve a 2 or more line improvement in visual acuity from baseline at 2 years in Protocol I, a previous DRCR.net (Diabetic Retinopathy Clinical Research Network) study. Furthermore, 27% of ranibizumab-treated eyes still had central subfield (CSF) thickness on time-domain optical coherence tomography (OCT) ≥ 300 at 1 year, and more than 40% of ranibizumab-treated eyes did not achieve complete resolution of retinal thickening (\< 250 microns) by 2 years. Thus, there is a need for alternative or additional treatments that will improve vision by reducing retinal edema in eyes with persistent DME following previous anti-VEGF therapy. Intravitreal steroid is not as efficacious as ranibizumab in eyes with DME overall, but it has been shown to have a positive effect for DME in some eyes and might add benefit in eyes that are already receiving anti-VEGF. The main objective of this study is to assess the short-term effects of combination steroid+anti-VEGF therapy on visual acuity and retinal thickness on OCT in comparison with that of continued anti-VEGF therapy alone in eyes with persistent central-involved DME and visual acuity impairment despite previous anti-VEGF treatment. This study will provide important information for the design of a future confirmatory phase III clinical trial on the efficacy of combination steroid and anti-VEGF in eyes with persistent DME and vision impairment following previous anti-VEGF therapy. The primary outcome for efficacy will be the mean change in visual acuity at 24 weeks. Each study eye is required to complete a 12-week run-in phase. The run-in phase will identify study eyes that truly have persistent DME despite anti-VEGF therapy by requiring an additional 3 injections while also collecting standardized visual acuity and OCT measurements. At the enrollment, 4-week and 8-week visits of the run-in phase, enrolled eyes will receive an intravitreal injection of ranibizumab 3mg. Then at the 12-week run-in visit, if the eye still has persistent DME, it will be randomized to receive either intravitreal sham+intravitreal ranibizumab 0.3 or intravitreal dexamethasone+intravitreal ranibizumab 0.3 injections. The randomized study duration is 24 week, during which a protocol visit takes place every month. The combination injections of sham+ranibizumab or dexamethasone +ranibizumab will be given at the randomization visit (baseline) and at the 12-week visit after randomization. In between, an intravitreal injection of ranibizumab only will be given to study eyes at the 4, 8, 16 and 20 week visits.
NCT00053898
RATIONALE: Estrogen can stimulate the growth of breast cancer cells. Tamoxifen may fight breast cancer by blocking the use of estrogen. Anastrozole may fight breast cancer by decreasing estrogen production. It is not yet known whether anastrozole is more effective than tamoxifen in preventing the recurrence of breast cancer. PURPOSE: This randomized phase III trial is studying anastrozole to see how well it works compared to tamoxifen in preventing the recurrence of breast cancer in postmenopausal women with ductal carcinoma in situ who are undergoing lumpectomy and radiation therapy.
NCT01920815
In order to determine the effectiveness of medical therapy options to prevent enlargement of the aorta in patients with a bicuspid aortic valve, a randomized study will be planned. This feasibility study will gather accurate data on number needed to screen, changes in medication use over time, and variance of the intended study endpoint.
NCT03120598
A cluster randomized experiment focused on testing the extent to which the organization-focused Implementation \& Sustainment Facilitation (ISF) strategy is an effective adjunct to the staff-focused Addiction Technology Transfer Center (ATTC) strategy.
NCT00430638
This 16 week study will examine the ability of olmesartan medoxomil to lower the blood pressure of patients with moderate to severe high blood pressure in comparison to placebo. The medication being tested has been approved by the FDA for the treatment of high blood pressure.
NCT02395042
This is a safety and efficacy study of LiRIS® in females with interstitial cystitis with Hunner's lesions.
NCT00112489
RATIONALE: Drugs used in chemotherapy, such as paclitaxel and carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. PURPOSE: This phase II trial is studying how well giving paclitaxel together with carboplatin works in treating patients with persistent or recurrent stage III or stage IV uterine cancer.
NCT02184442
The purpose of this study is to determine the safety and effectiveness of the SAPIEN XT™ THV with the associated delivery system for inoperable patients with severe symptomatic native aortic stenosis.
NCT02135614
The primary objective of this study is to evaluate the effects of presatovir on respiratory syncytial virus (RSV) viral load in RSV-positive adults who have been hospitalized with acute respiratory infectious symptoms. Participants will receive 1 dose of presatovir on Day 1 and followed for 27 days postdose. Nasal swabs will be collected at each study visit (excluding Day 28) and assayed for change in viral load as the primary endpoint.
NCT00304083
RATIONALE: Drugs used in chemotherapy, such as doxorubicin, ifosfamide, and etoposide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Radiation therapy uses high-energy x-rays to kill tumor cells. Giving combination chemotherapy with or without radiation therapy before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. Giving combination chemotherapy after surgery may kill any tumor cells that remain after surgery. PURPOSE: This phase II trial is studying how well combination chemotherapy works in treating patients with stage III or stage IV malignant peripheral nerve sheath tumors.
NCT00005645
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. PURPOSE: Phase II trial to study the effectiveness of ILX-295501 in treating patients who have stage III or stage IV ovarian cancer that has not responded to previous therapy.
NCT01121536
The primary objective of this study is to evaluate the safety and tolerability of long term (6 months) armodafinil treatment as adjunctive therapy to mood-stabilizing medications in adults with bipolar I disorder.
NCT01196975
This study is designed to test the immunogenicity and safety of an investigational influenza vaccine, in adults compared to two other influenza vaccines. This study will also evaluate the lot-to-lot consistency of three vaccine lots.
NCT00846924
Atrial fibrillation is the most common cardiac cause of ischemic stroke. Detecting atrial fibrillation after a stroke or TIA is critical because highly effective secondary stroke prevention therapy is available for individuals who are recognized to have atrial fibrillation. However, atrial fibrillation is likely under-diagnosed after stroke and TIA because atrial fibrillation is often difficult to detect as it is frequently paroxysmal and asymptomatic, and patients do not routinely undergo prolonged screening. The purpose of this study is to determine the diagnostic yield of a novel 30-day cardiac event monitor compared to a repeat 24-hour Holter monitor for detecting occult paroxysmal atrial fibrillation in patients with a recent ischemic stroke or TIA of undetermined etiology after completion of a standard clinical stroke work-up (including an initial negative Holter monitor.)
NCT02823470
The study will evaluate the impact of smart adherence technology for monitoring on lumacaftor/ivacaftor (LUM/IVA) adherence rates among subjects 16 years of age and older with Cystic Fibrosis (CF) who are homozygous for the F508del Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) mutation.
NCT02384135
Prospective validation of an age-adjusted D-dimer cut-off to rule out deep vein thrombosis (DVT)
NCT03118934
The purpose of this study is to compare an alternative fitting guide to a current fitting guide for optimizing contact lens parameters and determining contact lens prescription.
NCT02653625
This is an open label, proof of concept (PoC) study of Cenicriviroc (CVC) in adult participants with Primary Sclerosing Cholangitis (PSC). The main objective of this PoC study is to assess changes in alkaline phosphatase (ALP) both individually and as a group, over 24 weeks of treatment with CVC.
NCT01626456
This study will evaluate the safety and durability of effect of ALKS 9072 (also known as ALKS 9070) during long-term treatment of subjects with stable schizophrenia.
NCT02262338
AGT-182 is a fusion protein containing idursulfase that is intended to deliver the enzyme peripherally and to the brain, when administered intravenously. This study is a safety and dose ranging study to obtain safety and exposure data, as well as information on the biological activity of the investigational drug.
