Hepatitis C and HIV coinfection

Last updated

Human Immunodeficiency Virus (HIV) and Hepatitis C Virus (HCV) co-infection is a multi-faceted, chronic condition that significantly impacts public health. According to the World Health Organization (WHO), 2 to 15% of those infected with HIV are also affected by HCV, increasing their risk of morbidity and mortality due to accelerated liver disease. The burden of co-infection is especially high in certain high-risk groups, such as intravenous drug users and men who have sex with men. [1] These individuals who are HIV-positive are commonly co-infected with HCV due to shared routes of transmission including, but not limited to, exposure to HIV-positive blood, sexual intercourse, and passage of the Hepatitis C virus from mother to infant during childbirth. [2]

Contents

Infection with HCV can be asymptomatic, resolve itself without treatment, or can lead to cirrhosis or cancer.

Signs and symptoms

Although symptoms of HIV and HCV mono-infection have been well-studied over the years, the symptoms associated with HIV and HCV co-infection remain a developing field of research. Many co-infected individuals report a difficulty in attributing their symptoms to a particular viral infection, indicating an overlap in symptoms of both diseases. This suggests that interventions aiming to reduce the disease burden associated with HIV and HCV co-infection must consist of strategies to manage symptoms of each individual infection.[ citation needed ]

In contrast to HIV and HCV co-infection, there has been significant research delineating the signs and symptoms of each of these individual illnesses. Common symptoms experienced by HIV-infected individuals include fever, night sweats, diarrhea, nausea, headache, and fatigue. [3] On the other hand, symptoms associated with HCV infection include fatigue, depression, urticaria, peripheral neuropathy, joint pain, and irritability. Co-infected individuals can experience a range of these symptoms, with some studies showing fatigue to be the most prevalent symptom. [4]

Risk factors

Due to the similar routes of transmission of HIV and HCV, HIV-positive individuals are at great risk of HIV and HCV co-infection. [5] These routes of transmission include percutaneous blood exposure, sexual intercourse, and mother-to-child transmission. [2] In the United States, injection drug use is known to be the most common mode of transmission of HCV. [6] Some studies have shown that co-infection is significantly associated with older age as well as illicit intravenous and non-intravenous drug use, and HIV-infected individuals have a higher overall risk of HCV infection irrespective of intravenous drug use or other risk factors. [7]

Mechanism

HIV

HIV is contracted by coming in contact with the bodily fluids of someone HIV positive. These fluids include blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk. An individual can become infected with HIV if these fluids enter the bloodstream by way of a mucous membrane, damaged tissue or injection. Common HIV routes of transmission include sharing needles, having unprotected sex with someone who is HIV positive, mother to fetus during pregnancy, being stuck with an HIV-contaminated sharp object, etc. [8] Once the virus has entered the blood stream, it attaches to and enters t-helper cells (CD4 cells) in order to replicate. After reverse transcription, the new viral DNA integrates itself into the host cell's DNA and instructs the cell to produce viral proteins. These viral proteins bud off of the host CD4 cell and move on to infect other CD4 cells which is how the virus spreads in the body and destroys the immune system. [9]

HCV

HCV is transmitted by coming in contact with the blood of someone infected with HCV. The virus is commonly spread by sharing needles, mother to infant during birth, improperly sterilized medical equipment, intercourse with an infected individual, and unregulated tattoos. [10] Once inside the body, the virus enters the liver's hepatocyte cells via receptor-mediated endocytosis. Inside the cell, the viral RNA undergoes translation and at the end of the whole process, viral proteins are created. These proteins fuse with lipid droplets in the cytosol of the hepatocyte to form a cell known as a high-density HCV precursor. In the golgi apparatus, the HCV precursor cell fuses with two more cells before becoming the HCV lipoviral particle. HCV in this particle form is protected from antibody neutralization which would normally stop the virus from spreading. These lipoviral particles are released out of the hepatocyte to find other hepatocytes to infect. [11]

HIV/HCV

Since the two viruses can be spread in similar ways, it is possible for cotransmission to occur where an individual gets infected with both viruses at the same time. People who are coinfected with HIV and HCV by way of blood contact are more likely to be infected with HCV before HIV. Studies have shown that in comparison to HIV, there is up to a 10 fold greater risk of transmitting HCV after contact with an infected needle. [12]

Diagnosis

HIV

To diagnose an individual with HIV, a test must be taken to determine if the virus is present in their system. There are several test options including ELISA, at-home, saliva, viral load, and western blot. [13] To establish the presence of the HIV virus, some tests measure the level of HIV antibodies in the blood and/or saliva or the level of both HIV antigens and antibodies in the blood. Other tests can detect the presence of the HIV virus by calculating the amount of actual virus present in the blood. None of the tests available can determine if a person is positive immediately after they believe they have been exposed to the virus. Each test has a window of time after the initial exposure occurred until the test can accurately tell if an individual has been infected or not. One reason for this is because the focus of some of the tests are antibodies. After the initial exposure to the virus, it usually takes 3–4 weeks but it can take up to six months for antibodies to be produced by the body. For nucleic acid tests, like the viral load blood test, it can take anywhere from 10–33 days for the test to provide an accurate result. If an individual's first HIV test is positive, it is recommended for them to take a second test to confirm the results. If this follow-up test is also positive, an HIV positive diagnosis can likely be made. [14]

HCV

For an individual to be diagnosed with HCV, they must first take the hepatitis C antibody (HCV Ab) screening test. This test is used to determine the presence of HCV antibodies in the blood. It can take anywhere from 3–12 weeks after the time of initial exposure for antibodies to appear in the blood. Therefore, even if a person is infected with HCV, an HCV Ab test may not show a positive result until after that amount of time has passed. If the HCV Ab test result is positive for HCV antibodies, then the individual either has an active HCV infection or previously had an infection which has since cleared. The individual must follow-up with a quantitative and/or qualitative HCV RNA blood test which provides a count of the HCV viral load and indicates if the infection is chronic or not. The virus RNA can be detected in the blood 1–2 weeks after exposure. For a quantitative test, a low viral load is any value below <800,000 IU/L and anything above 800,000 IU/L is considered a high viral load. Lower viral loads at the start of treatment have been associated with greater likelihood to clear the infection. [15] A positive result for a qualitative HCV RNA blood test confirms that the active virus is present in the individual's bloodstream and that the infection is chronic. A negative result can indicate that the person's immune system was able to spontaneously clear their body of the infection without treatment. Lastly, there is an HCV genotype test which is done to identify the particular genotype (or strain) of the HCV virus the individual is infected with. There are a total of six different HCV genotypes. Knowing the specific genotype of the virus is important when deciding on treatment options because some antiviral medications are more effective against certain genotypes. [16]

Treatment

Persons living with an HCV-HIV co-infection are at higher risk for certain adverse medical outcomes, such as accelerated hepatic fibrosis, [17] hepatic decompensation, [18] and immune dysregulation. [6] Due to higher mortality rates in co-infected individuals as a result of accelerated liver disease - in comparison to individuals with HIV mono-infection [19] - the treatment objective would be to primarily target the HCV infection in these individuals. [20]

In individuals living with HIV, anti-retroviral therapy (ART) has been shown to preserve immune function, reduce the effects of HIV-related inflammation, and delay hepatic disease. Therefore, treatment plans for individuals with HIV/HCV co-infection include: an initial ART regimen (as recommended for HIV mono-infected individuals); simultaneous HCV treatment involving oral direct-acting antivirals (DAA); and special consideration given to potential for severe drug-drug interactions between the selected medication regimens. [21] When initiating DAA therapy, the individual is typically assessed for ART-naivety. It is recommended that the individual, if not previously already on ART for HIV maintenance, initiate ART 4–6 weeks prior to DAA administration in order to adequately adjust to regimen and provide a greater foundation for efficacious response to HCV treatment. [22]

HCV Treatment Options: The overall goal of HCV DAA therapy is to create a Sustained Virological Response for 12 consecutive weeks (SVR12) to ensure the Hepatitis C virus is not detected in the blood. [23] In clinical trials, the use of the following DAA combinations have shown similar efficacy rates (by achieving SVR12) in individuals with HIV/HCV co-infection as those with HCV mono-infection: [20]

Elbasvir/Grazoprevir

Glecaprevir/Pibrentasvir

Ledipasvir/Sofosbuvir

Due to limited clinical safety data, the following DAA combinations, while available, are not considered as first-line therapies: [20]

Sofosbuvir/Velpatasvir

Sofosbuvir/Velpatasvir/Voxilaprevir

Barriers to care

Barriers to care exist when discussing therapeutic options for HCV/HIV co-infected individuals. For example, other co-morbidities such as severe hepatic decompensation, cardiac disease, and renal disorders contribute to treatment barriers since these individuals would not be eligible for anti-retroviral therapy. [27] [28] Individuals with continued alcohol/drug/substance abuse and those that exhibit depressive symptoms along with suicidal ideations are also subject to ineligible status for HCV treatment in HCV/HIV co-infected persons. [29]

Epidemiology

At the lowest estimate, there are 35 million individuals infected with HIV and 80 million infected with Hepatitis C worldwide. [30] With the significant global effect of each of these viruses, it is also important to note that there is a considerable overlap of HIV-positive individuals co-infected with HCV. In fact, 20% of HIV-positive individuals also have Hepatitis C. This overlap is related to the common ways these viruses are spread, including contaminated blood and bodily fluids such as semen and vaginal fluids. [31]

There are marked differences between groups affected by this co-infection. However, it is consistent that HIV-positive individuals have a higher prevalence of Hepatitis C infection. Of those co-infected with HIV and HCV, almost 60% are intravenous drug users, a high risk group for mono-infection with HIV or HCV. Additionally, prevalence varies by geographical location with the highest prevalence of co-infection located in North Africa and the Middle East versus the lowest prevalence located in East Africa. [32]

History

Over time, liver disease and its complications have arisen as both a morbidity and mortality concern for people with HIV. Studies have determined that co-infection with HIV and HCV is associated with both faster and more severe liver damage than HCV infection alone. [30] In fact, mortality due to liver disease is now one of the top three causes of death in HIV-infected individuals, with 66% of these liver disease-related deaths due to concurrent HCV infection. [33] Additionally, due to the development of novel therapies to treat HIV, antiretroviral therapies, HIV-positive individuals are taking chronic medications to prevent the progression of HIV to AIDS. However, these medications can have negative side effects on the liver, and can therefore worsen liver disease. [34]

The effects of HIV infection on HCV have been widely studied. However, the data on the effects of HCV infection on HIV are conflicting. Some studies show that HCV infection does not affect HIV progression, while others have shown a faster progression of HIV in those co-infected with HCV. When considering this conflicting information, it is important to note that many of these studies were completed before the introduction of antiretroviral therapies for HIV, which are now the standard-of-care for HIV-positive individuals. [6]

Related Research Articles

<span class="mw-page-title-main">Hepatitis</span> Inflammation of the liver

Hepatitis is inflammation of the liver tissue. Some people or animals with hepatitis have no symptoms, whereas others develop yellow discoloration of the skin and whites of the eyes (jaundice), poor appetite, vomiting, tiredness, abdominal pain, and diarrhea. Hepatitis is acute if it resolves within six months, and chronic if it lasts longer than six months. Acute hepatitis can resolve on its own, progress to chronic hepatitis, or (rarely) result in acute liver failure. Chronic hepatitis may progress to scarring of the liver (cirrhosis), liver failure, and liver cancer.

<span class="mw-page-title-main">Hepatitis C</span> Human viral infection

Hepatitis C is an infectious disease caused by the hepatitis C virus (HCV) that primarily affects the liver; it is a type of viral hepatitis. During the initial infection people often have mild or no symptoms. Occasionally a fever, dark urine, abdominal pain, and yellow tinged skin occurs. The virus persists in the liver in about 75% to 85% of those initially infected. Early on, chronic infection typically has no symptoms. Over many years however, it often leads to liver disease and occasionally cirrhosis. In some cases, those with cirrhosis will develop serious complications such as liver failure, liver cancer, or dilated blood vessels in the esophagus and stomach.

<span class="mw-page-title-main">Hepatitis A</span> Acute infectious disease of the liver

Hepatitis A is an infectious disease of the liver caused by Hepatovirus A (HAV); it is a type of viral hepatitis. Many cases have few or no symptoms, especially in the young. The time between infection and symptoms, in those who develop them, is 2–6 weeks. When symptoms occur, they typically last 8 weeks and may include nausea, vomiting, diarrhea, jaundice, fever, and abdominal pain. Around 10–15% of people experience a recurrence of symptoms during the 6 months after the initial infection. Acute liver failure may rarely occur, with this being more common in the elderly.

<span class="mw-page-title-main">Seroconversion</span> Development of specific antibodies in the blood serum as a result of infection or immunization

In immunology, seroconversion is the development of specific antibodies in the blood serum as a result of infection or immunization, including vaccination. During infection or immunization, antigens enter the blood, and the immune system begins to produce antibodies in response. Before seroconversion, the antigen itself may or may not be detectable, but the antibody is absent. During seroconversion, the antibody is present but not yet detectable. After seroconversion, the antibody is detectable by standard techniques and remains detectable unless the individual seroreverts. Seroreversion, or loss of antibody detectability, can occur due to weakening of the immune system or waning antibody concentration over time. Seroconversion refers the production of specific antibodies against specific antigens, meaning that a single infection could cause multiple waves of seroconversion against different antigens. Similarly, a single antigen could cause multiple waves of seroconversion with different classes of antibodies. For example, most antigens prompt seroconversion for the IgM class of antibodies first, and subsequently the IgG class.

<span class="mw-page-title-main">Viral hepatitis</span> Liver inflammation from a viral infection

Viral hepatitis is liver inflammation due to a viral infection. It may present in acute form as a recent infection with relatively rapid onset, or in chronic form.

Coinfection is the simultaneous infection of a host by multiple pathogen species. In virology, coinfection includes simultaneous infection of a single cell by two or more virus particles. An example is the coinfection of liver cells with hepatitis B virus and hepatitis D virus, which can arise incrementally by initial infection followed by superinfection.

<span class="mw-page-title-main">Hepatitis C virus</span> Species of virus

The hepatitis C virus (HCV) is a small, enveloped, positive-sense single-stranded RNA virus of the family Flaviviridae. The hepatitis C virus is the cause of hepatitis C and some cancers such as liver cancer and lymphomas in humans.

GB virus C (GBV-C), formerly known as hepatitis G virus (HGV) and also known as human pegivirus – HPgV is a virus in the family Flaviviridae and a member of the Pegivirus, is known to infect humans, but is not known to cause human disease. Reportedly, HIV patients coinfected with GBV-C can survive longer than those without GBV-C, but the patients may be different in other ways. Research is active into the virus' effects on the immune system in patients coinfected with GBV-C and HIV.

<span class="mw-page-title-main">Spider angioma</span> Medical condition

A spider angioma or spider naevus, also nevus araneus, is a type of telangiectasis found slightly beneath the skin's surface, often containing a central red spot and deep reddish extensions which radiate outwards like a spider's web or a spider's legs. They are common and often benign, presenting in around 10–15% of healthy adults and young children. However, having more than three spider angiomas is likely to be abnormal and may be a sign of liver disease and/or hepatitis C ; it also suggests the probability of esophageal varices.

<span class="mw-page-title-main">Hepatitis B</span> Human viral infection

Hepatitis B is an infectious disease caused by the Hepatitis B virus (HBV) that affects the liver; it is a type of viral hepatitis. It can cause both acute and chronic infection.

<span class="mw-page-title-main">Telaprevir</span>

Telaprevir (VX-950), marketed under the brand names Incivek and Incivo, is a pharmaceutical drug for the treatment of hepatitis C co-developed by Vertex Pharmaceuticals and Johnson & Johnson. It is a member of a class of antiviral drugs known as protease inhibitors. Specifically, telaprevir inhibits the hepatitis C viral enzyme NS3/4A serine protease. Telaprevir is only indicated for use against hepatitis C genotype 1 viral infections and has not been proven to be safe or effective when used for other genotypes of the virus. The standard therapy of pegylated interferon and ribavirin is less effective than telaprevir in those with genotype 1.

Stuart C. Ray is an American physician. He is Vice Chair of Medicine for Data Integrity and Analytics, Associate Director of the Infectious Diseases Fellowship Training Program at the Johns Hopkins School of Medicine, and a Professor in the Department of Medicine, Division of Infectious Diseases. Ray also holds appointments in Viral Oncology and the Division of Health Sciences Informatics. He is affiliated with the Institute for Computational Medicine at Johns Hopkins and is licensed to practice medicine in Maryland.

<span class="mw-page-title-main">Simeprevir</span> Chemical compound

Simeprevir, sold under the trade names Olysio among others, is a medication used in combination with other medications for the treatment of hepatitis C. It is specifically used for hepatitis C genotype 1 and 4. Medications it is used with include sofosbuvir or ribavirin and peginterferon-alfa. Cure rates are in 80s to 90s percent. It may be used in those who also have HIV/AIDS. It is taken by mouth once daily for typically 12 weeks.

Infectious diseases within American correctional settings are a concern within the public health sector. The corrections population is susceptible to infectious diseases through exposure to blood and other bodily fluids, drug injection, poor health care, prison overcrowding, demographics, security issues, lack of community support for rehabilitation programs, and high-risk behaviors. The spread of infectious diseases, such as HIV and other sexually transmitted diseases, hepatitis C (HCV), hepatitis B (HBV), and tuberculosis, result largely from needle-sharing, drug use, and consensual and non-consensual sex among prisoners. HIV and hepatitis C need specific attention because of the specific public health concerns and issues they raise.

Infections of the hepatitis C virus (HCV) in children and pregnant women are less understood than those in other adults. Worldwide, the prevalence of HCV infection in pregnant women and children has been estimated to 1-8% and 0.05-5% respectively. The vertical transmission rate has been estimated to be 3-5% and there is a high rate of spontaneous clearance (25-50%) in the children. Higher rates have been reported for both vertical transmission. and prevalence in children (15%).

<span class="mw-page-title-main">Beclabuvir</span>

Beclabuvir is an antiviral drug for the treatment of hepatitis C virus (HCV) infection that has been studied in clinical trials. In February 2017, Bristol-Myers Squibb began sponsoring a post-marketing trial of beclabuvir, in combination with asunaprevir and daclatasvir, to study the combination's safety profile with regard to liver function. From February 2014 to November 2016, a phase II clinical trial was conducted on the combination of asunaprevir/daclatasvir/beclabuvir on patients infected with both HIV and HCV. Furthermore, a recent meta-analysis of six published six clinical trials showed high response rates in HCV genotype 1-infected patients treated with daclatasvir, asunaprevir, and beclabuvir irrespective of ribavirin use, prior interferon-based therapy, or restriction on noncirrhotic patients, IL28B genotype, or baseline resistance-associated variants

Elbasvir/grazoprevir is a fixed-dose combination for the treatment of hepatitis C, containing elbasvir and grazoprevir. It is used to treat chronic hepatitis C virus (HCV) genotypes 1 or 4 infection in both treatment-naïve and treatment-experienced patients.

Hepatitis C virus (HCV) genotypes refer to the genetic variations that occurs in the hepatitis C virus. Hepatitis C is a contagious disease that primarily affects the liver, causing severe damage as the disease progresses. It is caused by the Hepatitis C virus, a small, enveloped RNA virus. The transmission of hepatitis C is through the contact with the blood of the infected person, for example by sharing the needles or by using non-sterile medical equipment. HCV is transmitted globally because of the high infection rate and is also associated with a high mortality rate. The World Health Organization indicates the 3.3% of the world population is infected by the HCV virus. Statistical records show that there are about 13 million HCV affected persons in Сhina, 3.5 million affected persons in the United States, and about 10 million people are affected by HCV in Pakistan. In all cases, the viral genotype of the HCV stays the same, occasionally mutations do occur making the treatment more complex by targeting the changes in the genotype. Hepatitis C virus genotype is considered more common than the Hepatitis B virus infection contributing to more than a million cases annually and is considered one of the major reason for liver transplantation in United States. Some of the HCV genotypes may develop in people without symptoms leading to dangerous conditions like liver cirrhosis causing a permanent damage to liver and the unnoticed HCV conditions will affect brain, joints, blood vessels, bones, and kidneys.

HPgV-2 is the second human pegivirus discovered. It was first identified in 2005 in blood of transfusion recipients and initially named hepegivirus 1 because it shared some genetic features with both pegiviruses and hepaciviruses. HPgV-2 was later independently discovered by another group in the blood of a HCV-infected patient who had undergone multiple blood transfusions and died from sepsis of unclear etiology. It was then named human pegivirus 2. HPgV-2 is now classified in the pegivirus genus as part of Pegivirus H species.

<span class="mw-page-title-main">Interferon Lambda 4</span> Protein-coding gene in the species Homo sapiens

Interferon lambda 4 is one of the most recently discovered human genes and the newest addition to the interferon lambda protein family. This gene encodes the IFNL4 protein, which is involved in immune response to viral infection.

References

  1. "WHO: HIV and hepatitis coinfections". WHO. Archived from the original on April 1, 2014. Retrieved 31 July 2020.
  2. 1 2 Mohsen AH, Easterbrook P, Taylor CB, Norris S (October 2002). "Hepatitis C and HIV-1 coinfection". Gut. 51 (4): 601–8. doi:10.1136/gut.51.4.601. PMC   1773386 . PMID   12235089.
  3. Johnson MO, Stallworth T, Neilands TB (June 2003). "The drugs or the disease? Causal attributions of symptoms held by HIV-positive adults on HAART". AIDS and Behavior. 7 (2): 109–17. doi:10.1023/a:1023938023005. PMID   14586196. S2CID   19784952.
  4. Bova C, Jaffarian C, Himlan P, Mangini L, Ogawa L (2008). "The Symptom Experience of HIV/HCV-Coinfected Adults". The Journal of the Association of Nurses in AIDS Care. 19 (3): 170–80. doi:10.1016/j.jana.2008.01.003. PMC   2405888 . PMID   18457758.
  5. "WHO | HIV and hepatitis coinfections". WHO. Archived from the original on April 18, 2014. Retrieved 2020-08-03.
  6. 1 2 3 Chew KW, Bhattacharya D (October 2016). "Virologic and immunologic aspects of HIV-hepatitis C virus coinfection". AIDS. 30 (16): 2395–2404. doi:10.1097/QAD.0000000000001203. PMC   6039386 . PMID   27427873.
  7. Freitas SZ, Teles SA, Lorenzo PC, Puga MA, Tanaka TS, Thomaz DY, et al. (2014). "HIV and HCV coinfection: prevalence, associated factors and genotype characterization in the Midwest Region of Brazil". Revista do Instituto de Medicina Tropical de Sao Paulo. 56 (6): 517–24. doi:10.1590/S0036-46652014000600011. PMC   4296873 . PMID   25351547.
  8. "HIV Transmission | HIV Basics | HIV/AIDS | CDC". www.cdc.gov. 2019-09-25. Retrieved 2020-08-02.
  9. "The lifecycle of HIV". Avert. 2019-06-03. Retrieved 2020-08-02.
  10. "Hepatitis C Questions and Answers for the Public | CDC". www.cdc.gov. 2020-07-28. Retrieved 2020-08-02.
  11. "Lifecycle - HCV Biology - Hepatitis C Online". www.hepatitisc.uw.edu. Retrieved 2020-08-03.
  12. Kim AY, Chung RT (September 2009). "Coinfection with HIV-1 and HCV--a one-two punch". Gastroenterology. 137 (3): 795–814. doi:10.1053/j.gastro.2009.06.040. PMC   3146750 . PMID   19549523.
  13. "HIV Diagnosis". ucsfhealth.org. Retrieved 2020-07-31.
  14. "HIV Testing | HIV/AIDS | CDC". www.cdc.gov. 2020-06-09. Retrieved 2020-07-31.
  15. "Hepatitis C RNA Quantitative Testing: Test of Hepatitis C - Viral Hepatitis and Liver Disease". www.hepatitis.va.gov. Retrieved 2020-08-02.
  16. "HCV Genotypes". Treatment Action Group. Retrieved 2020-08-03.
  17. Kirk GD, Mehta SH, Astemborski J, Galai N, Washington J, Higgins Y, et al. (May 2013). "HIV, age, and the severity of hepatitis C virus-related liver disease: a cohort study". Annals of Internal Medicine. 158 (9): 658–66. doi:10.7326/0003-4819-158-9-201305070-00604. PMC   3708651 . PMID   23440167.
  18. Lo Re V, Kallan MJ, Tate JP, Localio AR, Lim JK, Goetz MB, et al. (March 2014). "Hepatic decompensation in antiretroviral-treated patients co-infected with HIV and hepatitis C virus compared with hepatitis C virus-monoinfected patients: a cohort study". Annals of Internal Medicine. 160 (6): 369–79. doi:10.7326/M13-1829. PMC   4254786 . PMID   24723077.
  19. Pineda JA, Romero-Gómez M, Díaz-García F, Girón-González JA, Montero JL, Torre-Cisneros J, et al. (April 2005). "HIV coinfection shortens the survival of patients with hepatitis C virus-related decompensated cirrhosis". Hepatology. 41 (4): 779–89. doi: 10.1002/hep.20626 . PMID   15800956.
  20. 1 2 3 "Patients With HIV/HCV Coinfection | HCV Guidance". www.hcvguidelines.org. Retrieved 2020-08-03.
  21. "HCV/HIV Considerations for Antiretroviral Use in Patients with Coinfections Adult and Adolescent ARV". AIDSinfo. Retrieved 2020-08-03.
  22. Balagopal A, Kandathil AJ, Higgins YH, Wood J, Richer J, Quinn J, et al. (August 2014). "Antiretroviral therapy, interferon sensitivity, and virologic setpoint in human immunodeficiency virus/hepatitis C virus coinfected patients". Hepatology. 60 (2): 477–86. doi:10.1002/hep.27158. PMC   4110185 . PMID   24706559.
  23. "FAQs about Sustained Virological Response - Viral Hepatitis and Liver Disease". www.hepatitis.va.gov. Retrieved 2020-08-03.
  24. Rockstroh JK, Nelson M, Katlama C, Lalezari J, Mallolas J, Bloch M, et al. (August 2015). "Efficacy and safety of grazoprevir (MK-5172) and elbasvir (MK-8742) in patients with hepatitis C virus and HIV co-infection (C-EDGE CO-INFECTION): a non-randomised, open-label trial". The Lancet. HIV. 2 (8): e319-27. doi:10.1016/s2352-3018(15)00114-9. PMID   26423374.
  25. Rockstroh JK, Lacombe K, Viani RM, Orkin C, Wyles D, Luetkemeyer AF, et al. (September 2018). "Efficacy and Safety of Glecaprevir/Pibrentasvir in Patients Coinfected With Hepatitis C Virus and Human Immunodeficiency Virus Type 1: The EXPEDITION-2 Study". Clinical Infectious Diseases. 67 (7): 1010–1017. doi:10.1093/cid/ciy220. PMC   6137115 . PMID   29566246.
  26. Naggie S, Cooper C, Saag M, Workowski K, Ruane P, Towner WJ, et al. (August 2015). "Ledipasvir and Sofosbuvir for HCV in Patients Coinfected with HIV-1". The New England Journal of Medicine. 373 (8): 705–13. doi:10.1056/NEJMoa1501315. PMC   4892372 . PMID   26196665.
  27. Fleming CA, Tumilty S, Murray JE, Nunes D (April 2005). "Challenges in the treatment of patients coinfected with HIV and hepatitis C virus: need for team care". Clinical Infectious Diseases. 40 Suppl 5: S349-54. doi: 10.1086/427452 . PMID   15768347.
  28. Butt AA, McGinnis K, Skanderson M, Justice AC (September 2011). "A comparison of treatment eligibility for hepatitis C virus in HCV-monoinfected versus HCV/HIV-coinfected persons in electronically retrieved cohort of HCV-infected veterans". AIDS Research and Human Retroviruses. 27 (9): 973–9. doi:10.1089/AID.2011.0004. PMC   3719436 . PMID   21338329.
  29. Nunes D, Saitz R, Libman H, Cheng DM, Vidaver J, Samet JH (September 2006). "Barriers to treatment of hepatitis C in HIV/HCV-coinfected adults with alcohol problems". Alcoholism: Clinical and Experimental Research. 30 (9): 1520–6. doi:10.1111/j.1530-0277.2006.00183.x. PMC   1592345 . PMID   16930214.
  30. 1 2 Mandorfer M, Schwabl P, Steiner S, Reiberger T, Peck-Radosavljevic M (May 2016). "Advances in the management of HIV/HCV coinfection". Hepatology International. 10 (3): 424–35. doi:10.1007/s12072-015-9691-4. PMID   26758592. S2CID   207381530.
  31. Soriano V, Vispo E, Labarga P, Medrano J, Barreiro P (January 2010). "Viral hepatitis and HIV co-infection". Antiviral Research. Twenty-five Years of Antiretroviral Drug Development: Progress and Prospects. 85 (1): 303–15. doi:10.1016/j.antiviral.2009.10.021. PMID   19887087.
  32. Platt L, Easterbrook P, Gower E, McDonald B, Sabin K, McGowan C, et al. (July 2016). "Prevalence and burden of HCV co-infection in people living with HIV: a global systematic review and meta-analysis". The Lancet. Infectious Diseases. 16 (7): 797–808. doi:10.1016/S1473-3099(15)00485-5. PMID   26922272 . Retrieved 30 July 2020.
  33. Puoti M, Moioli MC, Travi G, Rossotti R (May 2012). "The burden of liver disease in human immunodeficiency virus-infected patients" (PDF). Seminars in Liver Disease. Thieme Medical Publishers. 32 (2): 103–13. doi:10.1055/s-0032-1316473. PMID   22760649 . Retrieved 30 July 2020.
  34. Hu J, Liu K, Luo J (2019). "HIV-HBV and HIV-HCV Coinfection and Liver Cancer Development". Cancer Treatment and Research. Springer, Cham. 177: 231–250. doi: 10.1007/978-3-030-03502-0_9 . ISBN   978-3-030-03501-3. PMID   30523627.