Clinical Trials

  • Principal Investigator:

    Magdalena E Sobieszczyk, MD
    Almost 40,000 people get HIV in the U.S. each year and almost all occur via sexual contact, especially male-to-male contact. The number of new infections has decreased slightly each year, however, we need other HIV prevention tools, such as developing a greatly, effective HIV vaccine, to better reduce HIV infections. An HIV vaccine is the best long-term hope for ending AIDS. We are looking for healthy, 18-60 year old and HIV-negative people to join studies we conduct. SCREENING AND EDUCATION: 1. We will ask you to complete an electronic pre-screen questionnaire ( www.columbiastudies.org ) to...
  • Principal Investigator:

    Marcus Rebello Pereira, MD
    The primary objective of this study is to determine if an HIV-infected donor liver (HIVD+) transplant issafe with regards to major transplant-related and HIV-related complications. This study will evaluate if receiving a liver transplant from an HIV-infected deceased liver donor is safe with regards to survival and major transplant-related and HIV-related complications compared to receiving a liver from an HIV-uninfected deceased liver donor (HIVD-). Those participants who have accepted an HIVD- organ will be randomized to be followed in the full study or followed in the nested observational...
  • Principal Investigator:

    Marcus Rebello Pereira, MD
    The primary objective of this study is to determine if an HIV-infected donor liver (HIVD+) transplant issafe with regards to major transplant-related and HIV-related complications. This study will evaluate if receiving a liver transplant from an HIV-infected deceased liver donor is safe with regards to survival and major transplant-related and HIV-related complications compared to receiving a liver from an HIV-uninfected deceased liver donor (HIVD-). Those participants who have accepted an HIVD- organ will be randomized to be followed in the full study or followed in the nestedobservational...
  • Principal Investigator:

    Magdalena E Sobieszczyk, MD
    The HIV Vaccine Trials Network (HVTN) and Columbia University Irving Medical Center are doing a study to learn more about SARS-CoV-2 infection and the COVID-19 disease that it can cause. The purpose of this study is to learn more about infection with and recovery from the virus called SARS-CoV-2. Some people know this virus by the name coronavirus. It can cause the disease called COVID-19. You are being asked to take part in this study because you are age 18 or older and have recovered from COVID-19. Your participation in this study will last for at least 1 visit and may last up to about 1...
  • Principal Investigator:

    Magdalena E Sobieszczyk, MD
    The purpose of the study is to create a cohort of individuals who have been affected by COVID and follow them over time to understand how long antibodies last in the blood after infection and vaccination, describe clinical symptoms and risk of re-infection, as well as psychosocial well-being and coping during COVID-19. We want to follow you for two years with testing and questionnaires to learn answers to these questions. Please contact us for more information and thank you for your interest and patience.
  • Principal Investigator:

    Michael T Yin, MD
    We are seeking volunteers who have been diagnosed with COVID-19 by a healthcare provider or by lab testing.We are also looking for volunteers who have never tested positive for COVID-19 and have not received a COVID-19 vaccine. The study will be looking at antibody levels and how long the virus remains in the body. We are also studying the long-term complications that can occur after recovery from an acute COVID-19 infection, commonly referred to as long-COVID, long haul COVID, and post-acute sequelae of SARS-CoV-2 (PASC). At each visit you will be asked to complete a questionnaire, and to...
  • Principal Investigator:

    Magdalena E Sobieszczyk, MD
    We are looking for HIV-negative individuals 18 to 60 years old who are interested in learning more about HIV prevention research studies. We will ask you to complete a brief questionnaire to find out if we can schedule you for a one-on-one, 1.5-hour education visit to learn about the research we do. The education visit will help you decide if you want to participate in one of our studies. You will be compensated for the visit. Your responses to this questionnaire will be kept strictly confidential.
  • Principal Investigator:

    Marcus Rebello Pereira, MD
    This research is being done to learn whether organ transplantation from HIV-positive deceased donors is as safe and effective in HIV-positive recipients as transplants from HIV-negative deceased donors. People with end-stage organ disease and HIV infection, and who qualify for organ transplantation, may join this study.
  • Principal Investigator:

    Michael T Yin, MD
    The study is exploring the impact of gender, age, HIV infection, and menopausal status on dental health.The study is open to men and women, ages 35-70.
  • Principal Investigator:

    Michael T Yin, MD
    The study is exploring the impact of gender, age, HIV infection, and menopausal status on dental health.The study is open to men and women, ages 35-70.

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