A Phase 2 interventional study of ChAd63-KH in Leishmaniasis, Cutaneous, sponsored by University of York. Completed at 1 site in Sudan. Open to participants aged 12 Years to 50 Years. Per ClinicalTrials.gov, last updated 2020-01-28.
Sponsored by University of York · Phase 2, Interventional, and Treatment
This is a study to assess the safety of a new candidate Leishmania vaccine ChAd63-KH in patients with persistent post kala azar dermal leishmaniasis (PKDL).
This is a Phase II trial in patients with PKDL, to assess the safety and compare the humoral and cellular immune responses generated by the candidate vaccine in patients, and observe any clinical changes in the disease over a 42 day period following vaccination.
Study design: Eight adult volunteers will receive 1x10(10)vp and the subsequent eight volunteers will receive 7.5 x10(10)vp. Adolescents will be vaccinated with either 1x10(10)vp or 7.5 x10(10)vp, to be determined by evaluation of all available data after DSMB \& CTSC review.
This is a study to assess the safety of a new candidate Leishmania vaccine ChAd63-KH in patients with persistent post kala azar dermal leishmaniasis (PKDL). With 95% of cases occurring in India, Bangladesh, Nepal, the Sudan and Brazil, visceral leishmaniasis (VL) is a disease of the poor. With an estimated 40,000 or more deaths annually, mostly children and young adults, VL ranks second only to malaria amongst parasitic infections for mortality, and as measured by DALYs lost, it ranks in the top ten infectious diseases globally. No effective vaccine has yet been developed for VL / PKDL despite significant research efforts.
The investigators have recently completed a successful first-in-human clinical trial of a new therapeutic vaccine for VL / PKDL (ChAd63-KH). This trial demonstrated safety of ChAd63-KH in healthy UK adult volunteers and immunogenicity against the two Leishmania antigens on par with that seen to other vaccine candidate antigens in clinical development for other diseases (e.g. malaria, HCV, Ebola). Following external peer review of the data generated during LEISH1, the investigators have been awarded further Wellcome Trust funding to progress this vaccine into Phase II clinical trials in patients with PKDL.
Study design: The first eight adult volunteers will receive 1x10(10)vp and, following DSMB and CTSC review, the subsequent eights adult volunteers will receive 7.5 x10(10)vp. Doses will be administered at a single time point. Adolescents will be vaccinated with either 1x10(10)vp or 7.5 x10(10)vp, to be determined by evaluation of all available data after DSMB \& CTSC review.
Objectives:
To assess the safety of a new candidate Leishmania vaccine ChAd63- KH in patients with persistent PKDL.
Secondary objectives:
103 studies on the registry are indexed under Leishmaniasis, Cutaneous; 18 are open to participants now.
This study's enrollment of 24 is below the median of 60 across 77 interventional studies indexed under Leishmaniasis, Cutaneous.
Browse Leishmaniasis, Cutaneous studies →University of York is the lead sponsor of 11 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
The volunteer must be:
Adolescents
All Participants
Exclusion Criteria:
The volunteer may not enter the study if any of the following apply:
Any history of severe local or general reaction to vaccination as defined as
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Live vaccines
Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Single intramuscular dose of ChAd63-KH, 1 x10(10)vp or, following safety review, 7.5 x 10(10)vp in adults
Drug: ChAd63-KH
Single intramuscular dose of ChAd63-KH, 1x10(10)vp or, following safety review, 7.5 x 10(10)vp in adolescents
Drug: ChAd63-KH
ChAd63-KH in adults and adolescents with persistent PKDL.
Safety
Safety of a new candidate Leishmania vaccine in patients with persistent PKDL, assessed by the occurrence of biochemical, haematological and physiological responses which meet the criteria for adverse events/serious adverse events as described in the clinical trial protocol (v1.55)
Time frame: 90 days
Cellular immune responses
To compare the humoral and cellular immune responses generated by the candidate vaccine in patients with persistent PKDL.
Time frame: 90 days
Clinical changes in cutaneous PKDL disease
To observe any clinical changes in the cutaneous PKDL disease over a 42 day period according to a clinical grading score following vaccination
Time frame: 42 days following vaccination
Plan to share: Undecided
This study is completed, as verified in Jan 2020. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: CHAD63
University of York