Safety, Immunogenicity, and Protective Efficacy of Radiation Attenuated Plasmodium Falciparum NF54 Sporozoites (PfSPZ Vaccine) During Malaria Transmission Season in Healthy African Adult Women of Childbearing Potential in Mali

Malaria Clinical Trial

Official title:

Randomized, Placebo-Controlled, Double-Blind Study to Assess Safety, Immunogenicity, and Protective Efficacy of Radiation Attenuated Plasmodium Falciparum NF54 Sporozoites (PfSPZ Vaccine) During Malaria Transmission Season in Healthy African Adult Women of Childbearing Potential in Mali

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03989102
• Other study ID #: 999919113
• Secondary ID: 19-I-N113
• Status: Completed
• Phase: Phase 2
• Start date: July 3, 2019
• Est. completion date: March 17, 2023

Study information

• Verified date: May 2022
• Source: National Institutes of Health Clinical Center (CC)
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Background:

Malaria is a disease spread by mosquitos. Pregnant women are highly susceptible to malaria. This can lead to poor health outcomes for pregnant women and their babies. Researchers want to test a malaria vaccine in women of child bearing potential (WOCBP) and pregnant women. This has not been done before.

Objective:

To assess the safety and tolerability of PfSPZ vaccine in healthy Malian WOCBP.

Eligibility:

Healthy women ages 18 38 who live in Ouelessebougou, Mali, and surrounding villages

Design:

Participants will be screened with:

• Physical exam

• Medical history

• Blood, urine, and heart tests

• Multiple-choice test about malaria

Participants will get 3 injections by needle into a vein of the study vaccine or a placebo. All 3 will be within 1 month. They will not know whether they receive the vaccine or placebo.

Participants will receive treatment to prevent malaria. This will be about 2 weeks before the first and third injections.

After the third injection, participants will be followed for about 1 year. They will be tested to see if the vaccine is safe and protects against malaria infection. They will have blood tests.

If participants get a rash or injection site reaction, photos of the site may be taken.

Any women who become pregnant during the trial will be followed through the end of pregnancy. Babies and their mothers will be followed through the first year of life

Description:

Pregnant women are highly susceptible to Plasmodium falciparum malaria, leading to substantial maternal, perinatal, and infant mortality. While malaria vaccine development has made significant progress in recent years, no trials of malaria vaccines have ever been conducted in only women of child bearing potential (WOCBP) or in pregnant women.

PfSPZ Vaccine (Sanaria, Inc) is an advanced malaria candidate being developed for use in

pregnant women, owing in part to its highly favorable safety profile. The vaccine is comprised of aseptic, metabolically active, non-replicating, purified, cryopreserved P. falciparum sporozoites. In multiple double-blind, placebo-controlled trials, there have been no differences in adverse events between vaccinees versus controls. PfSPZ Vaccine induces immune responses to the sporozoite and liver stages of parasite development in the human host and prevents progression to blood stage parasitemia as well as averting disease sequelae; a compelling rationale to test PfSPZ Vaccine for its benefits in this proposed population.

Sanaria has already achieved vaccine efficacy against homologous and heterogenous parasite populations in endemic areas following three doses of PfSPZ Vaccine in several studies with 9.0x10^5 and 1.8x10^6 PfSPZ Vaccine and has explored accelerated regimens, such as 1, 8, 29 days. Accelerated PfSPZ Vaccine regimens such as this could induce protection earlier in pregnancy, minimizing the period at risk and improving pregnancy outcomes over the control group.

Given this, the Malaria Research and Training Center, the Laboratory of Malaria Immunology

and Vaccinology National Institute of Allergy and Infectious Diseases, and Sanaria, Inc. propose to initiate testing of the day 1, 8, and 29 dosing regimen of PfSPZ Vaccine in WOCBP, and in subsequent studies, in pregnant women, using doses of 9.0x10^5 and 1.8x10^6 PfSPZ Vaccine. This will be the first step in a clinical development plan for PfSPZ Vaccine in WOCBP and pregnant women: 1) safety and efficacy studies in non-pregnant WOCBP (this trial), 2) studies of the safety and efficacy of a primary immunization series in all trimesters, and 3) studies to evaluate the safety and efficacy of boosting during pregnancy.

A pregnancy registry study (#17-I-N018) has been ongoing in Mali since 2017 to gain

background data on maternal/fetal outcomes in the target population in anticipation of this study. Women who become pregnant during the course of this study, and their offspring, will be followed for maternal clinical outcomes and malaria infection.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 324
• Est. completion date: March 17, 2023
• Est. primary completion date: April 5, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: N/A to 38 Years

Eligibility

• INCLUSION CRITERIA:

1. Females of child bearing potential aged greater than or equal to 18 and less than or equal to 38 years

2. Able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process

3. In good general health and without clinically significant medical history

4. Willing to have blood samples stored for future research

5. Available for the duration of the study

6. Must be willing to use reliable contraception (defined as: pharmacologic contraceptives [parental delivery] or pre-existing intrauterine or implantable device) from 21 days prior to study day 1 to 28 days after last vaccination

7. Report being interested in becoming pregnant within the next 1-2 years

EXCLUSION CRITERIA:

1. Pregnancy at the time of enrollment/vaccination, as determined by a positive urine or serum human chorionic gonadotropin (beta-hCG) test

2. Biologically unable to become pregnant secondary to: surgical sterilization, premature ovarian insufficiency (defined as no menses for greater than or equal to 12 months without an alternative medical cause)

3. Behavioral, cognitive, or psychiatric disease that in the opinion of the investigator affects the ability of the participant to understand and comply with the study protocol

4. Hemoglobin (Hgb), white blood cell count (WBC), absolute neutrophils, and platelets outside the local laboratory-defined limits of normal and greater than or equal to Grade 2 (subjects may be included at the investigators discretion for not clinically significant abnormal values)

5. Alanine transaminase (ALT) or creatinine (Cr) level above the local laboratory-defined upper limit of normal and greater than or equal to Grade 2 (subjects may be included at the investigators discretion for not clinically significant abnormal values)

6. Infected with human immunodeficiency virus (HIV)

7. Known or documented sickle cell disease by history (Note: known sickle cell trait is NOT exclusionary)

8. Clinically significant abnormal electrocardiogram (ECG) such as abnormal corrected QT interval (QTc).

9. Evidence of clinically significant neurologic, cardiac, pulmonary, hepatic, endocrine, rheumatologic, autoimmune, hematological, oncologic, or renal disease by history, physical examination, and/or laboratory studies including urinalysis

10. History of receiving any investigational product within the past 30 days

11. Participation or planned participation in a clinical trial with an investigational product prior to completion of the follow-up visit 28 days following last vaccination OR planned participation in an investigational vaccine study until the last required protocol visit

12. Medical, occupational, or family problems as a result of alcohol or illicit drug use during the past 12 months

13. History of a severe allergic reaction (Grade 2 or higher or per PI discretion) or anaphylaxis

14. Severe asthma (defined as asthma that is unstable or required emergent care, urgent care, hospitalization, or intubation during the past two years, or that has required the use of oral or parenteral corticosteroids at any time during the past two years)

15. Pre-existing autoimmune or antibody-mediated diseases including but not limited to:

systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, Sjogren s syndrome, or autoimmune thrombocytopenia

16. Known immunodeficiency syndrome

17. Known asplenia or functional asplenia

18. Use of chronic (greater than or equal to 14 days) oral or IV corticosteroids (excluding topical or nasal) at immunosuppressive doses (i.e., prednisone greater than or equal to 20 mg/day) or immunosuppressive drugs within 30 days of vaccination

19. Receipt of a live vaccine within the past four weeks or a killed vaccine within the past two weeks prior to Vaccination #1 and every subsequent vaccination day

20. Receipt of immunoglobulins and/or blood products within the past six months

21. Previous receipt of an investigational malaria vaccine in the last five years

22. Known allergies or other contraindications against use of artemeter/lumefantrine

23. Other condition(s) that, in the opinion of the investigator, would jeopardize the safety or rights of a participant participating in the trial, interfere with the evaluation of the study objectives, or would render the subject unable to comply with the protocol

Related Conditions & MeSH terms

• Malaria

Intervention

Biological:
• PfSPZ Vaccine
PfSPZ vaccine is comprised of aseptic, metabolically active, non-replicating, purified, cryopreserved P. falciparum sporozoites.

Other:
• Normal Saline
Sterile isotonic (0.9%) normal saline is a clear liquid, making it indistinguishable from the study product when drawn up into a syringe; and will be used as a placebo, rather than a comparator vaccine

Locations

Country	Name	City	State
Mali	Ouelessebougou Health Research Unit	Ouelessebougou

Sponsors (2)

Lead Sponsor	Collaborator
National Institute of Allergy and Infectious Diseases (NIAID)	Malaria Research and Training Center, University of Science Techniques and Technologies of Bamako Sanaria Inc.

Country where clinical trial is conducted

Mali, 

References & Publications (6)

Hoffman SL, Billingsley PF, James E, Richman A, Loyevsky M, Li T, Chakravarty S, Gunasekera A, Chattopadhyay R, Li M, Stafford R, Ahumada A, Epstein JE, Sedegah M, Reyes S, Richie TL, Lyke KE, Edelman R, Laurens MB, Plowe CV, Sim BK. Development of a metabolically active, non-replicating sporozoite vaccine to prevent Plasmodium falciparum malaria. Hum Vaccin. 2010 Jan;6(1):97-106. doi: 10.4161/hv.6.1.10396. Epub 2010 Jan 21. — View Citation

Mordmuller B, Sulyok Z, Sulyok M, Molnar Z, Lalremruata A, Calle CL, Bayon PG, Esen M, Gmeiner M, Held J, Heimann HL, Woldearegai TG, Ibanez J, Flugge J, Fendel R, Kreidenweiss A, Kc N, Murshedkar T, Chakravarty S, Riyahi P, Billingsley PF, Church LWP, Richie TL, Sim BKL, Hoffman SL, Kremsner PG. A PfSPZ vaccine immunization regimen equally protective against homologous and heterologous controlled human malaria infection. NPJ Vaccines. 2022 Aug 23;7(1):100. doi: 10.1038/s41541-022-00510-z. — View Citation

Seder RA, Chang LJ, Enama ME, Zephir KL, Sarwar UN, Gordon IJ, Holman LA, James ER, Billingsley PF, Gunasekera A, Richman A, Chakravarty S, Manoj A, Velmurugan S, Li M, Ruben AJ, Li T, Eappen AG, Stafford RE, Plummer SH, Hendel CS, Novik L, Costner PJ, Mendoza FH, Saunders JG, Nason MC, Richardson JH, Murphy J, Davidson SA, Richie TL, Sedegah M, Sutamihardja A, Fahle GA, Lyke KE, Laurens MB, Roederer M, Tewari K, Epstein JE, Sim BK, Ledgerwood JE, Graham BS, Hoffman SL; VRC 312 Study Team. Protection against malaria by intravenous immunization with a nonreplicating sporozoite vaccine. Science. 2013 Sep 20;341(6152):1359-65. doi: 10.1126/science.1241800. Epub 2013 Aug 8. — View Citation

Sirima SB, Ouedraogo A, Tiono AB, Kabore JM, Bougouma EC, Ouattara MS, Kargougou D, Diarra A, Henry N, Ouedraogo IN, Billingsley PF, Manoj A, Abebe Y, Kc N, Ruben A, Richie TL, James ER, Joshi S, Shrestha B, Strauss K, Lyke KE, Plowe CV, Potter GE, Cox C, Jones W, Sim BKL, Hoffman SL, Laurens MB. A randomized controlled trial showing safety and efficacy of a whole sporozoite vaccine against endemic malaria. Sci Transl Med. 2022 Dec 7;14(674):eabj3776. doi: 10.1126/scitranslmed.abj3776. Epub 2022 Dec 7. — View Citation

Sissoko MS, Healy SA, Katile A, Omaswa F, Zaidi I, Gabriel EE, Kamate B, Samake Y, Guindo MA, Dolo A, Niangaly A, Niare K, Zeguime A, Sissoko K, Diallo H, Thera I, Ding K, Fay MP, O'Connell EM, Nutman TB, Wong-Madden S, Murshedkar T, Ruben AJ, Li M, Abebe Y, Manoj A, Gunasekera A, Chakravarty S, Sim BKL, Billingsley PF, James ER, Walther M, Richie TL, Hoffman SL, Doumbo O, Duffy PE. Safety and efficacy of PfSPZ Vaccine against Plasmodium falciparum via direct venous inoculation in healthy malaria-exposed adults in Mali: a randomised, double-blind phase 1 trial. Lancet Infect Dis. 2017 May;17(5):498-509. doi: 10.1016/S1473-3099(17)30104-4. Epub 2017 Feb 16. — View Citation

Sissoko MS, Healy SA, Katile A, Zaidi I, Hu Z, Kamate B, Samake Y, Sissoko K, Mwakingwe-Omari A, Lane J, Imeru A, Mohan R, Thera I, Guindo CO, Dolo A, Niare K, Koita F, Niangaly A, Rausch KM, Zeguime A, Guindo MA, Bah A, Abebe Y, James ER, Manoj A, Murshedkar T, Kc N, Sim BKL, Billingsley PF, Richie TL, Hoffman SL, Doumbo O, Duffy PE. Safety and efficacy of a three-dose regimen of Plasmodium falciparum sporozoite vaccine in adults during an intense malaria transmission season in Mali: a randomised, controlled phase 1 trial. Lancet Infect Dis. 2022 Mar;22(3):377-389. doi: 10.1016/S1473-3099(21)00332-7. Epub 2021 Nov 18. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of Participants With Adverse Events Within 7 Days After Each Vaccine Administration	Assess safety and tolerability of PfSPZ Vaccine primary series in healthy Malian women of child-bearing potential (WOCBP) when given at 1, 8, 29 days at two doses (9 x10^5; 1.8 x10^6).	7 days after each vaccination at days 1, 8, and 29