Prevention of tuberculosis in Bacille Calmette-Guérin-primed, HIV-infected adults boosted with an inactivated whole-cell mycobacterial vaccine

To determine whether a multiple-dose series of an inactivated whole cell mycobacterial vaccine, Mycobacterium vaccae, can prevent HIV-associated tuberculosis. The DarDar trial was a randomized, placebo-controlled, double-blind trial. The study was carried in an outpatient facility in Dar es Salaam,...

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Veröffentlicht in:AIDS (London) 2010-03, Vol.24 (5), p.675-685
Hauptverfasser: VON REYN, Charles F, MTEI, Lillian, HORSBURGH, Charles R, PALLANGYO, Kisali, ALBEIT, Robert D, WADDELL, Richard, COLE, Bernard, MACKENZIE, Todd, MATEE, Mecky, BAKARI, Muhammad, TVAROHA, Susan, ADAMS, Lisa V
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container_end_page 685
container_issue 5
container_start_page 675
container_title AIDS (London)
container_volume 24
creator VON REYN, Charles F
MTEI, Lillian
HORSBURGH, Charles R
PALLANGYO, Kisali
ALBEIT, Robert D
WADDELL, Richard
COLE, Bernard
MACKENZIE, Todd
MATEE, Mecky
BAKARI, Muhammad
TVAROHA, Susan
ADAMS, Lisa V
description To determine whether a multiple-dose series of an inactivated whole cell mycobacterial vaccine, Mycobacterium vaccae, can prevent HIV-associated tuberculosis. The DarDar trial was a randomized, placebo-controlled, double-blind trial. The study was carried in an outpatient facility in Dar es Salaam, Tanzania. HIV-infected patients with CD4 cell counts of at least 200 cells/microl and a Bacille Calmette-Guérin scar were chosen for the study. The intervention was carried out by random 1:1 assignment to five intradermal doses of M. vaccae or placebo. Tuberculin skin tests were performed, and patients with reactions of at least 5 mm were administered isoniazid for 6 months. The main outcome measures were disseminated (primary endpoint), definite, and probable tuberculosis (secondary endpoints). Two thousand thirteen individuals were randomized (1006 to M. vaccae, 1007 to placebo) and followed every 3 months for a median of 3.3 years. The trial was terminated early because of slow accrual of cases of disseminated tuberculosis and significant protection against definite tuberculosis. Hazard ratios were disseminated tuberculosis 0.52 (95% confidence interval 0.21-1.34; seven cases in M. vaccae, 13 cases in placebo; log-rank P = 0.16), definite tuberculosis 0.61 (95% confidence interval 0.39-0.96; 33 cases in M. vaccae, 52 cases in placebo; P = 0.03), and probable tuberculosis 1.17 (95% confidence interval 0.76-1.80; 48 cases in M. vaccae, 40 cases in placebo; P = 0.46). Immunization was well tolerated, with no adverse effect on CD4 cell count or HIV viral load, and no increase in the rate of serious adverse events. Administration of a multiple-dose series of M. vaccae to HIV-infected adults with childhood Bacille Calmette-Guérin immunization is safe and is associated with significant protection against definite tuberculosis. These results provide evidence that immunization with a whole cell mycobacterial vaccine is a viable strategy for the prevention of HIV-associated tuberculosis.
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The DarDar trial was a randomized, placebo-controlled, double-blind trial. The study was carried in an outpatient facility in Dar es Salaam, Tanzania. HIV-infected patients with CD4 cell counts of at least 200 cells/microl and a Bacille Calmette-Guérin scar were chosen for the study. The intervention was carried out by random 1:1 assignment to five intradermal doses of M. vaccae or placebo. Tuberculin skin tests were performed, and patients with reactions of at least 5 mm were administered isoniazid for 6 months. The main outcome measures were disseminated (primary endpoint), definite, and probable tuberculosis (secondary endpoints). Two thousand thirteen individuals were randomized (1006 to M. vaccae, 1007 to placebo) and followed every 3 months for a median of 3.3 years. The trial was terminated early because of slow accrual of cases of disseminated tuberculosis and significant protection against definite tuberculosis. Hazard ratios were disseminated tuberculosis 0.52 (95% confidence interval 0.21-1.34; seven cases in M. vaccae, 13 cases in placebo; log-rank P = 0.16), definite tuberculosis 0.61 (95% confidence interval 0.39-0.96; 33 cases in M. vaccae, 52 cases in placebo; P = 0.03), and probable tuberculosis 1.17 (95% confidence interval 0.76-1.80; 48 cases in M. vaccae, 40 cases in placebo; P = 0.46). Immunization was well tolerated, with no adverse effect on CD4 cell count or HIV viral load, and no increase in the rate of serious adverse events. Administration of a multiple-dose series of M. vaccae to HIV-infected adults with childhood Bacille Calmette-Guérin immunization is safe and is associated with significant protection against definite tuberculosis. These results provide evidence that immunization with a whole cell mycobacterial vaccine is a viable strategy for the prevention of HIV-associated tuberculosis.</description><identifier>ISSN: 0269-9370</identifier><identifier>EISSN: 1473-5571</identifier><identifier>DOI: 10.1097/QAD.0b013e3283350f1b</identifier><identifier>PMID: 20118767</identifier><language>eng</language><publisher>Hagerstown, MD: Lippincott Williams &amp; Wilkins</publisher><subject>Adult ; Bacterial diseases ; BCG Vaccine - immunology ; Biological and medical sciences ; CD4 antigen ; CD4 Lymphocyte Count ; Children ; Clinical trials ; Dose-Response Relationship, Immunologic ; Double-Blind Method ; Female ; HIV Infections - complications ; HIV Infections - epidemiology ; HIV Infections - immunology ; Human bacterial diseases ; Human immunodeficiency virus ; Human viral diseases ; Humans ; Immunity, Cellular ; Immunization ; Immunodeficiencies ; Immunodeficiencies. Immunoglobulinopathies ; Immunopathology ; Infectious diseases ; Isoniazid ; Male ; Medical sciences ; Mycobacterium ; Mycobacterium vaccae ; Side effects ; Skin tests ; Tanzania - epidemiology ; Tuberculin ; Tuberculosis ; Tuberculosis - epidemiology ; Tuberculosis - immunology ; Tuberculosis - prevention &amp; control ; Tuberculosis and atypical mycobacterial infections ; Vaccines ; Vaccines, Inactivated - immunology ; Viral diseases ; Viral diseases of the lymphoid tissue and the blood. 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The DarDar trial was a randomized, placebo-controlled, double-blind trial. The study was carried in an outpatient facility in Dar es Salaam, Tanzania. HIV-infected patients with CD4 cell counts of at least 200 cells/microl and a Bacille Calmette-Guérin scar were chosen for the study. The intervention was carried out by random 1:1 assignment to five intradermal doses of M. vaccae or placebo. Tuberculin skin tests were performed, and patients with reactions of at least 5 mm were administered isoniazid for 6 months. The main outcome measures were disseminated (primary endpoint), definite, and probable tuberculosis (secondary endpoints). Two thousand thirteen individuals were randomized (1006 to M. vaccae, 1007 to placebo) and followed every 3 months for a median of 3.3 years. The trial was terminated early because of slow accrual of cases of disseminated tuberculosis and significant protection against definite tuberculosis. Hazard ratios were disseminated tuberculosis 0.52 (95% confidence interval 0.21-1.34; seven cases in M. vaccae, 13 cases in placebo; log-rank P = 0.16), definite tuberculosis 0.61 (95% confidence interval 0.39-0.96; 33 cases in M. vaccae, 52 cases in placebo; P = 0.03), and probable tuberculosis 1.17 (95% confidence interval 0.76-1.80; 48 cases in M. vaccae, 40 cases in placebo; P = 0.46). Immunization was well tolerated, with no adverse effect on CD4 cell count or HIV viral load, and no increase in the rate of serious adverse events. Administration of a multiple-dose series of M. vaccae to HIV-infected adults with childhood Bacille Calmette-Guérin immunization is safe and is associated with significant protection against definite tuberculosis. These results provide evidence that immunization with a whole cell mycobacterial vaccine is a viable strategy for the prevention of HIV-associated tuberculosis.</description><subject>Adult</subject><subject>Bacterial diseases</subject><subject>BCG Vaccine - immunology</subject><subject>Biological and medical sciences</subject><subject>CD4 antigen</subject><subject>CD4 Lymphocyte Count</subject><subject>Children</subject><subject>Clinical trials</subject><subject>Dose-Response Relationship, Immunologic</subject><subject>Double-Blind Method</subject><subject>Female</subject><subject>HIV Infections - complications</subject><subject>HIV Infections - epidemiology</subject><subject>HIV Infections - immunology</subject><subject>Human bacterial diseases</subject><subject>Human immunodeficiency virus</subject><subject>Human viral diseases</subject><subject>Humans</subject><subject>Immunity, Cellular</subject><subject>Immunization</subject><subject>Immunodeficiencies</subject><subject>Immunodeficiencies. Immunoglobulinopathies</subject><subject>Immunopathology</subject><subject>Infectious diseases</subject><subject>Isoniazid</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Mycobacterium</subject><subject>Mycobacterium vaccae</subject><subject>Side effects</subject><subject>Skin tests</subject><subject>Tanzania - epidemiology</subject><subject>Tuberculin</subject><subject>Tuberculosis</subject><subject>Tuberculosis - epidemiology</subject><subject>Tuberculosis - immunology</subject><subject>Tuberculosis - prevention &amp; control</subject><subject>Tuberculosis and atypical mycobacterial infections</subject><subject>Vaccines</subject><subject>Vaccines, Inactivated - immunology</subject><subject>Viral diseases</subject><subject>Viral diseases of the lymphoid tissue and the blood. 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Immunoglobulinopathies</topic><topic>Immunopathology</topic><topic>Infectious diseases</topic><topic>Isoniazid</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Mycobacterium</topic><topic>Mycobacterium vaccae</topic><topic>Side effects</topic><topic>Skin tests</topic><topic>Tanzania - epidemiology</topic><topic>Tuberculin</topic><topic>Tuberculosis</topic><topic>Tuberculosis - epidemiology</topic><topic>Tuberculosis - immunology</topic><topic>Tuberculosis - prevention &amp; control</topic><topic>Tuberculosis and atypical mycobacterial infections</topic><topic>Vaccines</topic><topic>Vaccines, Inactivated - immunology</topic><topic>Viral diseases</topic><topic>Viral diseases of the lymphoid tissue and the blood. 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The DarDar trial was a randomized, placebo-controlled, double-blind trial. The study was carried in an outpatient facility in Dar es Salaam, Tanzania. HIV-infected patients with CD4 cell counts of at least 200 cells/microl and a Bacille Calmette-Guérin scar were chosen for the study. The intervention was carried out by random 1:1 assignment to five intradermal doses of M. vaccae or placebo. Tuberculin skin tests were performed, and patients with reactions of at least 5 mm were administered isoniazid for 6 months. The main outcome measures were disseminated (primary endpoint), definite, and probable tuberculosis (secondary endpoints). Two thousand thirteen individuals were randomized (1006 to M. vaccae, 1007 to placebo) and followed every 3 months for a median of 3.3 years. The trial was terminated early because of slow accrual of cases of disseminated tuberculosis and significant protection against definite tuberculosis. Hazard ratios were disseminated tuberculosis 0.52 (95% confidence interval 0.21-1.34; seven cases in M. vaccae, 13 cases in placebo; log-rank P = 0.16), definite tuberculosis 0.61 (95% confidence interval 0.39-0.96; 33 cases in M. vaccae, 52 cases in placebo; P = 0.03), and probable tuberculosis 1.17 (95% confidence interval 0.76-1.80; 48 cases in M. vaccae, 40 cases in placebo; P = 0.46). Immunization was well tolerated, with no adverse effect on CD4 cell count or HIV viral load, and no increase in the rate of serious adverse events. Administration of a multiple-dose series of M. vaccae to HIV-infected adults with childhood Bacille Calmette-Guérin immunization is safe and is associated with significant protection against definite tuberculosis. These results provide evidence that immunization with a whole cell mycobacterial vaccine is a viable strategy for the prevention of HIV-associated tuberculosis.</abstract><cop>Hagerstown, MD</cop><pub>Lippincott Williams &amp; Wilkins</pub><pmid>20118767</pmid><doi>10.1097/QAD.0b013e3283350f1b</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; EZB-FREE-00999 freely available EZB journals; Journals@Ovid Complete
subjects Adult
Bacterial diseases
BCG Vaccine - immunology
Biological and medical sciences
CD4 antigen
CD4 Lymphocyte Count
Children
Clinical trials
Dose-Response Relationship, Immunologic
Double-Blind Method
Female
HIV Infections - complications
HIV Infections - epidemiology
HIV Infections - immunology
Human bacterial diseases
Human immunodeficiency virus
Human viral diseases
Humans
Immunity, Cellular
Immunization
Immunodeficiencies
Immunodeficiencies. Immunoglobulinopathies
Immunopathology
Infectious diseases
Isoniazid
Male
Medical sciences
Mycobacterium
Mycobacterium vaccae
Side effects
Skin tests
Tanzania - epidemiology
Tuberculin
Tuberculosis
Tuberculosis - epidemiology
Tuberculosis - immunology
Tuberculosis - prevention & control
Tuberculosis and atypical mycobacterial infections
Vaccines
Vaccines, Inactivated - immunology
Viral diseases
Viral diseases of the lymphoid tissue and the blood. Aids
title Prevention of tuberculosis in Bacille Calmette-Guérin-primed, HIV-infected adults boosted with an inactivated whole-cell mycobacterial vaccine
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