571 matching studies

Sponsor Condition of Interest
Intravenous Fluid Administration's Effect on Pediatric Lumbar Puncture
University of Alabama at Birmingham Pediatric Lumbar Puncture
The purpose of this project is to determine if administration of normal saline intravenous fluids prior to a lumbar puncture improves first time success of lumbar puncture in infants less than 3 months of age. First time success of lumbar puncture defined as cerebrospinal fluid obtained on the first... expand

The purpose of this project is to determine if administration of normal saline intravenous fluids prior to a lumbar puncture improves first time success of lumbar puncture in infants less than 3 months of age. First time success of lumbar puncture defined as cerebrospinal fluid obtained on the first attempt with less than 1000 red blood cells per mm3 in the fluid specimen.

Type: Interventional

Start Date: Nov 2022

open study

Parathyroid Allotransplantation in Medically Refractory Hypoparathyroidism
University of Alabama at Birmingham Hypoparathyroidism
Options for treatment of severe, refractory hypocalcemia are limited for the thousands of patients in the United States who suffer from hypoparathyroidism. Parathyroid allotransplantation is an emerging treatment that provides hope for these individuals. Currently, this therapy has only been successfully... expand

Options for treatment of severe, refractory hypocalcemia are limited for the thousands of patients in the United States who suffer from hypoparathyroidism. Parathyroid allotransplantation is an emerging treatment that provides hope for these individuals. Currently, this therapy has only been successfully provided by a few centers in the world. In the UAB PATH trial, we propose to become one of the few centers worldwide to successfully achieve parathyroid allotransplantation in transplant-naïve patients.

Type: Interventional

Start Date: Jul 2025

open study

Study of ONO-4685 in Patients With Relapsed or Refractory T Cell Lymphoma
Ono Pharmaceutical Co. Ltd Relapsed or Refractory T Cell Lymphoma
This study will investigate the safety, tolerability, pharmacokinetics, and preliminary efficacy of ONO-4685 in patients with relapsed or refractory T cell Lymphoma expand

This study will investigate the safety, tolerability, pharmacokinetics, and preliminary efficacy of ONO-4685 in patients with relapsed or refractory T cell Lymphoma

Type: Interventional

Start Date: Dec 2021

open study

Cycled Phototherapy
NICHD Neonatal Research Network Hyper Bilirubinemia Premature Infant
Cycled phototherapy (PT) is likely to increase survival over that with continuous PT among extremely premature infants (< 750 g BW or <27 weeks GA). expand

Cycled phototherapy (PT) is likely to increase survival over that with continuous PT among extremely premature infants (< 750 g BW or <27 weeks GA).

Type: Interventional

Start Date: Jul 2020

open study

Digital Tomosynthesis Mammography and Digital Mammography in Screening Patients for Breast Cancer
ECOG-ACRIN Cancer Research Group Breast Screening
This randomized phase III trial studies digital tomosynthesis mammography and digital mammography in screening patients for breast cancer. Screening for breast cancer with tomosynthesis mammography may be superior to digital mammography for breast cancer screening and may help reduce the need for... expand

This randomized phase III trial studies digital tomosynthesis mammography and digital mammography in screening patients for breast cancer. Screening for breast cancer with tomosynthesis mammography may be superior to digital mammography for breast cancer screening and may help reduce the need for additional imaging or treatment.

Type: Interventional

Start Date: Sep 2017

open study

A Multicenter Access and Distribution Protocol for Unlicensed Cryopreserved Cord Blood Units (CBUs)
Center for International Blood and Marrow Transplant Research Hematologic Malignancies Inherited Disorders of Metabolism Inherited Abnormalities of Platelets Histiocytic Disorders Acute Myelogenous Leukemia (AML or ANLL)
This study is an access and distribution protocol for unlicensed cryopreserved cord blood units (CBUs) in pediatric and adult patients with hematologic malignancies and other indications. expand

This study is an access and distribution protocol for unlicensed cryopreserved cord blood units (CBUs) in pediatric and adult patients with hematologic malignancies and other indications.

Type: Observational

Start Date: Oct 2011

open study

Gut Oxalate Absorption in Calcium Oxalate Stone Disease
University of Alabama at Birmingham Kidney Stone Kidney Calculi Urolithiasis Urolithiasis, Calcium Oxalate Nephrolithiasis
The goal of this clinical trial study is to test if patients with idiopathic calcium oxalate kidney stones have an increased absorption of dietary oxalate, which would lead to increased urinary excretion of oxalate. The study will recruit adult patients with a history of calcium oxalate kidney stones... expand

The goal of this clinical trial study is to test if patients with idiopathic calcium oxalate kidney stones have an increased absorption of dietary oxalate, which would lead to increased urinary excretion of oxalate. The study will recruit adult patients with a history of calcium oxalate kidney stones and healthy volunteers without kidney stones. Participants will - ingest fixed diets containing low and moderately high amounts of oxalate for 5 days at a time - ingest a soluble form of oxalate and sugar preparations to test gut permeability - collect urine, blood, stool and breath sample during the fixed diets and the soluble oxalate test

Type: Interventional

Start Date: Apr 2024

open study

O. Formigenes Colonization in Calcium Oxalate Kidney Stone Disease
University of Alabama at Birmingham Kidney Stone Kidney Calculi Urolithiasis Urolithiasis, Calcium Oxalate Nephrolithiasis
The goal of this trial is to test if colonization with the gut bacteria Oxalobacter formigenes leads to a reduction in urinary oxalate excretion in patients with calcium oxalate kidney stone disease. The study will recruit adult participants with a history of calcium oxalate kidney stones who are... expand

The goal of this trial is to test if colonization with the gut bacteria Oxalobacter formigenes leads to a reduction in urinary oxalate excretion in patients with calcium oxalate kidney stone disease. The study will recruit adult participants with a history of calcium oxalate kidney stones who are not colonized with Oxalobacter formigenes. Participants will - ingest fixed diets containing low and moderately high amounts of oxalate for 4 days at a time - collect urine, blood and stool samples during the fixed diets - ingest a preparation of live Oxalobacter formigenes to induce colonization with Oxalobacter formigenes

Type: Interventional

Start Date: Apr 2024

open study

Testing the Use of Neratinib or the Combination of Neratinib and Palbociclib Targeted Treatment for HER2+...
National Cancer Institute (NCI) Malignant Female Reproductive System Neoplasm Malignant Solid Neoplasm Recurrent Malignant Female Reproductive System Neoplasm Recurrent Malignant Solid Neoplasm
This phase II ComboMATCH treatment trial compares the effect of neratinib to the combination of neratinib and palbociclib in treating patients with HER2 positive solid tumors. Neratinib and palbociclib are in a class of medications called kinase inhibitors. They work by blocking the action of an abnormal... expand

This phase II ComboMATCH treatment trial compares the effect of neratinib to the combination of neratinib and palbociclib in treating patients with HER2 positive solid tumors. Neratinib and palbociclib are in a class of medications called kinase inhibitors. They work by blocking the action of an abnormal protein that signals cancer cells to multiply. This helps slow or stop the spread of tumor cells. Giving neratinib and palbociclib in combination may shrink or stabilize cancers that over-express a specific biomarker called HER2.

Type: Interventional

Start Date: May 2024

open study

Long COVID Brain Fog: Cognitive Rehabilitation Trial
University of Alabama at Birmingham Long COVID Brain Fog Cognitive Impairment Cognitive Dysfunction Post-Acute COVID-19 Syndrome
This study will compare two approaches to cognitive rehabilitation in adults with long COVID with persistent, mild to moderate, cognitive impairment. One approach will feature (A) web-based computer "games" that trains how quickly individuals process information that they receive through their senses;... expand

This study will compare two approaches to cognitive rehabilitation in adults with long COVID with persistent, mild to moderate, cognitive impairment. One approach will feature (A) web-based computer "games" that trains how quickly individuals process information that they receive through their senses; (B) in-lab training on everyday activities with important cognitive components, (C) procedures designed to transfer improvements in cognition from the treatment setting to everyday life, and (D) a non-invasive form of vagus nerve stimulation (VNS), i.e., trans-auricular VNS (taVNS). Component B will include work-related tasks. This approach is termed Constraint-Induced Cognitive Therapy (CICT). The other approach will feature (A) web-based computer "games" that train reaction time and eye-hand coordination; (B) in-lab training on relaxation, healthy nutrition, and healthy sleep, (C) procedures designed to promote integration of these lifestyle changes into everyday life, and (D) taVNS. This approach is termed Brain Fitness Training (BFT). A subset of participants, who qualify for and and desire vocational rehabilitation (VR), will receive VR from the Alabama Department of Rehabilitation Services (ADRS) in addition to CICT or BFT. ADRS VR will include career counseling, prescription of on-the-job accommodations, and guidance on return-to-work. Those in the CICT + VR group will also receive on-the-job coaching from a peer mentor for a month after completing training. CICT, with or without VR, will involve 30 hours of training. Ten 3-hour in-lab, face-to-face, therapist-directed sessions will be scheduled. These sessions will feature one hour of gaming; the remainder will be committed to in-lab training on the target behaviors and the procedures designed to promote transfer of therapeutic gains to daily life and improving skills essential to work; the set of the latter procedures is termed the Transfer Package. ta-VNS will administered for 10 minutes before gaming and in-lab target behavior training. To accommodate the demands of participants' other activities, training sessions will be permitted to be scheduled as tightly as every weekday over 2 weeks or as loosely as every other weekday or so over 4 weeks. If a family caregiver is available, they will receive training on how to best support participants in their therapeutic program. After training ends, four follow-up phone calls will be scheduled approximately one-week apart with participants to promote integration of the skills gained during training into everyday life. BFT, with or without VR, will involve 30 hours of training following the same schedule as for CICT. Ten 3-hour in-lab, face-to-face, therapist-directed sessions will be scheduled. These sessions will feature one hour of gaming; the remainder will be committed to in-lab training on the target behaviors (healthy sleep, nutrition and relaxation habits) and the procedures designed to promote transfer of behavior change to daily life. ta-VNS will be administered for 10 minutes before gaming and in-lab target behavior training. If a family caregiver is available, they will receive training on how to best support participants in their therapeutic program. After training ends, four follow-up phone calls will be scheduled approximately one-week apart with participants to promote integration of the skills gained during training into everyday life. Participants will be randomly assigned to the interventions. Randomization will be stratified by whether participants qualify for and desire VR from ADRS or not. If yes, participants will be randomized in equal numbers to CICT + VR or BFT + VR. If no, participants will be randomized in equal numbers to CICT or BFT. Testing will happen one month before treatment, one day before treatment, one day afterwards, and 6- and 12-months afterwards. Outcomes measured will include cognitive processing speed, cognitive function on laboratory tests, and spontaneous performance of everyday activities with important cognitive components in daily life. Another important outcome measure will be whether or not participants were able to return back to work or had significant improvements in their work activities.

Type: Interventional

Start Date: Apr 2024

open study

Testing the Use of the Combination of Selumetinib and Olaparib or Selumetinib Alone Targeted Treatment...
National Cancer Institute (NCI) Recurrent Endometrial Carcinoma Recurrent Fallopian Tube Carcinoma Recurrent Ovarian Carcinoma Recurrent Primary Peritoneal Carcinoma
This phase II ComboMATCH treatment trial compares selumetinib plus olaparib to selumetinib alone in women with endometrial or ovarian (fallopian tube and primary peritoneal) cancer that has come back (recurrent) or that remains despite treatment (persistent) and harbors a mutation in the RAS pathway.... expand

This phase II ComboMATCH treatment trial compares selumetinib plus olaparib to selumetinib alone in women with endometrial or ovarian (fallopian tube and primary peritoneal) cancer that has come back (recurrent) or that remains despite treatment (persistent) and harbors a mutation in the RAS pathway. Selumetinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Olaparib is an inhibitor of PARP, an enzyme that helps repair deoxyribonucleic acid (DNA) when it becomes damaged. Blocking PARP may help keep tumor cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. The addition of olaparib to selumetinib could increase the percentage of tumors that shrink as well as lengthen the time that the tumors remain stable (without progression) as compared to selumetinib alone.

Type: Interventional

Start Date: Apr 2023

open study

Oxalate-Driven Host Responses in Kidney Stone Disease
University of Alabama at Birmingham Kidney Stones
This study is looking to understand the role of oxalate on kidney stone development and immunity. This study will enroll healthy participants and participants with calcium oxalate kidney stones (CaOx KS). Participants will be in this study for about 3 weeks, consume controlled diets, and provide blood... expand

This study is looking to understand the role of oxalate on kidney stone development and immunity. This study will enroll healthy participants and participants with calcium oxalate kidney stones (CaOx KS). Participants will be in this study for about 3 weeks, consume controlled diets, and provide blood and urine specimens.

Type: Interventional

Start Date: May 2023

open study

Daily Adaptive Radiation Therapy an Individualized Approach for Carcinoma of the Cervix
Varian, a Siemens Healthineers Company Cervical Cancer by FIGO Stage 2018
This is a single-arm, prospective, multi-center clinical trial designed to demonstrate that adaptive radiotherapy for locally advanced cervical cancer will translate into a decreased rate of acute gastrointestinal toxicity compared with the historically reported rate for non-adaptive intensity modulated... expand

This is a single-arm, prospective, multi-center clinical trial designed to demonstrate that adaptive radiotherapy for locally advanced cervical cancer will translate into a decreased rate of acute gastrointestinal toxicity compared with the historically reported rate for non-adaptive intensity modulated radiation therapy (IMRT). The timepoint for this assessment will be at week 5 of external beam radiotherapy (EBRT) and will use the Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE).

Type: Interventional

Start Date: May 2022

open study

Implementation of Whole Genome Sequencing as Screening in a Diverse Cohort of Healthy Infants
Brigham and Women's Hospital Genetic Predisposition to Disease Hereditary Diseases
This research study is exploring the use of genomic sequencing in the newborn period to screen healthy babies for current and future health risks. The study will enroll a diverse cohort of 500 healthy infants and their parents from Boston, MA; New York City, NY; and Birmingham, AL. A small blood sample... expand

This research study is exploring the use of genomic sequencing in the newborn period to screen healthy babies for current and future health risks. The study will enroll a diverse cohort of 500 healthy infants and their parents from Boston, MA; New York City, NY; and Birmingham, AL. A small blood sample will be collected from each infant, and whole genome sequencing will be performed in 1/2 of the cohort following a randomized controlled trial design. 3 months later, the randomization status and sequencing results will be shared with parents and pediatricians. Investigators will study the medical, behavioral, and economic outcomes of genomic sequencing to better understand how this technology can be implemented in outpatient primary care settings.

Type: Interventional

Start Date: Dec 2022

open study

Telemedicine for Unhealthy Alcohol Use in Persons Living With HIV Using CETA
University of Alabama at Birmingham Hiv Alcohol Problem
This study is designed to examine the efficacy of a brief intervention plus a cognitive-behavioral intervention compared to brief intervention alone to address unhealthy alcohol use and comorbid mental health symptoms to improve HIV outcomes among people living with HIV in Alabama. expand

This study is designed to examine the efficacy of a brief intervention plus a cognitive-behavioral intervention compared to brief intervention alone to address unhealthy alcohol use and comorbid mental health symptoms to improve HIV outcomes among people living with HIV in Alabama.

Type: Interventional

Start Date: May 2023

open study

Improving Scientific Rigor of Renal Clinical Endpoints for Sickle Cell Anemia
University of Alabama at Birmingham Sickle Cell Disease Renal Disease Glomerular Disease
The investigators will attempt to develop a more accurate equation to estimate eGFR in pediatric and adult sickle cell patients expand

The investigators will attempt to develop a more accurate equation to estimate eGFR in pediatric and adult sickle cell patients

Type: Observational

Start Date: May 2021

open study

Effectiveness of a Smoking Cessation Algorithm Integrated Into HIV Primary Care
University of Alabama at Birmingham HIV AIDS Smoking Cessation
To determine the efficacy of an algorithm designed to recommend smoking cessation-related pharmacotherapy options to the primary care providers of smokers living with HIV/AIDS. expand

To determine the efficacy of an algorithm designed to recommend smoking cessation-related pharmacotherapy options to the primary care providers of smokers living with HIV/AIDS.

Type: Interventional

Start Date: Aug 2020

open study

MEAL TIMING Study: Effect of Time-Restricted Feeding on 24-hour Glycemic Control, Blood Pressure, and...
University of Alabama at Birmingham PreDiabetes
One in three American adults have prediabetes, and up to 70% of adults with prediabetes eventually develop type 2 diabetes. With the high cost of treating diabetes, cost-effective approaches are needed to reduce the incidence of diabetes. One new strategy may be to change when people eat. Studies... expand

One in three American adults have prediabetes, and up to 70% of adults with prediabetes eventually develop type 2 diabetes. With the high cost of treating diabetes, cost-effective approaches are needed to reduce the incidence of diabetes. One new strategy may be to change when people eat. Studies in rodents suggest that a form of intermittent fasting that limits eating to a short time period each day and involves fasting for the rest of the day (time-restricted eating; TRE) improves blood sugar control and cardiovascular health. Preliminary studies suggest that TRE also improves blood sugar, weight loss, and cardiovascular health in humans. This study will be the first full-scale, controlled feeding trial to determine whether TRE can improve 24-hour blood sugar control, 24-hour blood pressure, and cardiovascular disease risk factors even when food intake is matched to the control group. This clinical trial will also determine whether the benefits of TRE depend on the time of day that people eat. Participants will be assigned to one of three groups: (1) 'Early TRE' (eat between ~8 am-3 pm), (2) 'Mid-day TRE' (eat between ~1 pm - 8 pm), or (3) Control Schedule (~8 am - 8 pm) for 8 weeks. All food will be provided and matched between groups.

Type: Interventional

Start Date: Aug 2020

open study

ProAgio in Pancreatic Ductal Adenocarcinoma (PDAC)
ProDa BioTech, LLC Pancreatic Ductal Carcinoma
This is an open-label Phase I/Ib dose-escalation, dose-expansion clinical trial of the safety, pharmacokinetics and clinical activity of ProAgio combined with gemcitabine and nab paclitaxel (G-nP) in previously untreated subjects with metastatic pancreatic ductal adenocarcinoma (PDAC) expand

This is an open-label Phase I/Ib dose-escalation, dose-expansion clinical trial of the safety, pharmacokinetics and clinical activity of ProAgio combined with gemcitabine and nab paclitaxel (G-nP) in previously untreated subjects with metastatic pancreatic ductal adenocarcinoma (PDAC)

Type: Interventional

Start Date: Sep 2023

open study

Does Fluorescence With or Without Indocyanine Green Improve Parathyroid Identification and Preservation
University of Alabama at Birmingham Parathyroid Dysfunction Adenoma
The aim of this study is to determine if fluorescence with or without indocyanine green can facilitate safe and accurate thyroid and parathyroid surgery. expand

The aim of this study is to determine if fluorescence with or without indocyanine green can facilitate safe and accurate thyroid and parathyroid surgery.

Type: Interventional

Start Date: Apr 2024

open study

Feasibility Trial of a Stakeholder-enhanced Lay-navigator-delivered Intervention (ImPart-Multi)
University of Alabama at Birmingham Kidney Diseases Cardiometabolic Risk Factors
We seek to explore the feasibility and acceptability of participation in a decision-support training program led by lay navigators. ImPart-Multi, an education-telehealth-based, is designed to empower Black chronic kidney disease patients (CKD) patients and their care partner to seek the resources... expand

We seek to explore the feasibility and acceptability of participation in a decision-support training program led by lay navigators. ImPart-Multi, an education-telehealth-based, is designed to empower Black chronic kidney disease patients (CKD) patients and their care partner to seek the resources and support needed to be activated allies when making health-related decisions. Participants, based on random assignment, will participate in survey completion at study start and at 12 and 24 weeks of enrollment, and will complete 1, 3, or 4 education sessions via telehealth or audio connection. Participants will also complete an interview to share their thoughts on the program and other factors of interest.

Type: Interventional

Start Date: Mar 2024

open study

Extended-Release Naltrexone and Monthly Extended-Release Buprenorphine for Cocaine Use Disorder (CURB-2)
University of Texas Southwestern Medical Center Cocaine Use Disorder
This is an 8-week, double-blind, randomized placebo-controlled trial of the efficacy of a combination of extended-release naltrexone (XR-NTX) and extended-release buprenorphine (XR-BUP) compared to matched placebo injections (PBO-Inj) for the treatment of cocaine use disorder (CUD). expand

This is an 8-week, double-blind, randomized placebo-controlled trial of the efficacy of a combination of extended-release naltrexone (XR-NTX) and extended-release buprenorphine (XR-BUP) compared to matched placebo injections (PBO-Inj) for the treatment of cocaine use disorder (CUD).

Type: Interventional

Start Date: Apr 2023

open study

Testing the Addition of Trastuzumab or Trastuzumab/Pertuzumab to the Usual Chemotherapy for HER2 Positive...
National Cancer Institute (NCI) Endometrial Serous Adenocarcinoma Uterine Corpus Carcinosarcoma
This phase II/III trial tests whether adding trastuzumab and hyaluronidase-oysk (Herceptin HylectaTM) or pertuzumab, trastuzumab and hyaluronidase-zzxf (PhesgoTM) to the usual chemotherapy (paclitaxel and carboplatin) works to shrink tumors in patients with HER2 positive endometrial serous carcinoma... expand

This phase II/III trial tests whether adding trastuzumab and hyaluronidase-oysk (Herceptin HylectaTM) or pertuzumab, trastuzumab and hyaluronidase-zzxf (PhesgoTM) to the usual chemotherapy (paclitaxel and carboplatin) works to shrink tumors in patients with HER2 positive endometrial serous carcinoma or carcinosarcoma. Trastuzumab and pertuzumab are monoclonal antibodies and forms of targeted therapy that attach to specific molecules (receptors) on the surface of tumor cells, known as HER2 receptors. When trastuzumab or pertuzumab attach to HER2 receptors, the signals that tell the cells to grow are blocked and the tumor cell may be marked for destruction by the body's immune system. Hyaluronidase is an endoglycosidase. It helps to keep pertuzumab and trastuzumab in the body longer, so that these medications will have a greater effect. Hyaluronidase also allows trastuzumab and trastuzumab/pertuzumab to be given by injection under the skin and shortens their administration time compared to trastuzumab or pertuzumab alone. Paclitaxel is a taxane and in a class of medications called antimicrotubule agents. It stops cancer cells from growing and dividing and may kill them. Carboplatin is in a class of medications known as platinum-containing compounds. It works in a way similar to the anticancer drug cisplatin, but may be better tolerated than cisplatin. Carboplatin works by killing, stopping or slowing the growth of tumor cells. Giving Herceptin Hylecta or Phesgo in combination with paclitaxel and carboplatin may shrink the tumor and prevent the cancer from coming back in patients with HER2 positive endometrial serous carcinoma or carcinosarcoma.

Type: Interventional

Start Date: Nov 2022

open study

Monitoring HER2+ Breast Cancer Neoadjuvant Treatment With Advanced PET/MRI
University of Alabama at Birmingham HER2-positive Breast Cancer
The purpose of the study is to see if using an investigational drug called [18F]FMISO with PET/MRI imaging can help monitor and predict the effect of trastuzumab (Herceptin) on chemotherapy in patients diagnosed with advanced HER2 positive breast cancer. This study is for imaging purposes only and... expand

The purpose of the study is to see if using an investigational drug called [18F]FMISO with PET/MRI imaging can help monitor and predict the effect of trastuzumab (Herceptin) on chemotherapy in patients diagnosed with advanced HER2 positive breast cancer. This study is for imaging purposes only and is not a treatment study. The results of this study will not change a patient's clinical treatment plan but it may help physicians and researchers better understand how best to treat patients with breast cancer in the future.

Type: Interventional

Start Date: Apr 2025

open study

Microdosed Atropine 0.1% and 0.01% Ophthalmic Solutions for Reduction of Pediatric Myopia Progression
Eyenovia Inc. Myopia
This study evaluates the progression of myopia in participants using microdosed atropine 0.01%, atropine 0.1%, or placebo ophthalmic solution. Eligible subjects will administer study medication daily in each eye for 48 months. Efficacy and safety assessments will be performed at visits scheduled for... expand

This study evaluates the progression of myopia in participants using microdosed atropine 0.01%, atropine 0.1%, or placebo ophthalmic solution. Eligible subjects will administer study medication daily in each eye for 48 months. Efficacy and safety assessments will be performed at visits scheduled for 1, 6, 12, 18, 24, 30 and 36 months after initiation of medication use. Subjects will be re-randomized at the 36 month visit, then followed at 6 month intervals for an additional year.

Type: Interventional

Start Date: Jun 2019

open study