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Table 1 Target product profile for malaria chemoprevention

From: Chemoprevention of malaria with long-acting oral and injectable drugs: an updated target product profile

Characteristics

Minimum essential

Ideal case

Indication for use

• Prevention against P. falciparum malaria

• Prevention against malaria caused by any Plasmodium species or mixed infectiona

Target population

• Children ≥ 3 months to 10 years

• OR pregnant women (second and third trimester)

• OR non-immune individuals

• All age groups and populations at riskb

• Pregnant women in all trimesters and breastfeeding women

Dosing regimen

• Oral: once daily dosing for 3 consecutive days per month

• Injectable: once every 3 months

• Oral: supervised single dose per month

• Injectable: once every 6 months

Formulation

• Oral: co-packaged child-friendly formulation; tablets for adults

• Injectable: intramuscular injection; volume injected and needle size in line with current standard for vaccines; partner drugs can be injected separately

• Oral: child-friendly fixed dose combination; tablets for adults

• Injectable: liquid pre-filled injection device for intramuscular or subcutaneous injection; fixed dose combination of the drugs

Anti-malarial effects

• Two blood schizonticide drugs

• At least one drug with causal prophylactic, gametocytocidal or sporontocidal activities

Efficacy

• Clearance of existing asymptomatic infections

• Paediatrics and non-immune: preventive efficacy against symptomatic malaria infections ≥ 90% over 1 month, or ≥ 80% over 4 months for orals; and ≥ 80% over 3–4 months for injectables

• Pregnancy: preventive efficacy against symptomatic malaria infections in the mother of ≥ 75% over 6 months

• Paediatrics and non-immune: preventive efficacy against symptomatic malaria infections ≥ 75% over 6 months

• Pregnancy: adverse pregnancy outcomes comparable to standard-of-care

Drug resistance

• Partner drugs with different modes of action

• Active against known drug-resistant clinical isolates

• Partner drugs with similar pharmacological duration of efficacyc

Safety and tolerability

• Favourable risk–benefit profile, with safety and tolerability comparable to WHO recommended preventive treatment or standard-of-care

• Highly favourable risk–benefit profile with improved safety and tolerability versus WHO recommended preventive treatment or standard-of-care

Food effect (for oral medication)

• Easily implementable food recommendation

• No food recommendation

Drug–drug interactions

• Minimal interactions manageable with dose adjustments

• No clinically significant interactions

Cost of treatment coursed

• Oral: $1 for adult, $0.25 for children ≤ 2 years

• Injectable: equivalent or lower than malaria vaccine

• Oral: Lower than standard-of-care

• Injectable: ≤ $1 for infants, ≤ $2 for children, ≤ $4 for adults

Stabilitye

• ≥ 2 years at ICH zone IVa/IVb conditions

• ≥ 3 years at ICH zone IVa/IVb conditions

  1. aActivity against non-falciparum species would be demonstrated in vitro and would not be tested specifically in clinical studies
  2. bHigh-risk groups, e.g., immunocompromised (HIV), sickle cell disease, malnourished
  3. cDefined as time above the minimum inhibitory concentration
  4. dGlobal Fund reference pricing for Q2 2024 (per treatment) is $0.28 SP doses for adults. For children, the cost for dispersible SP and dispersible SPAQ is $0.36 and $0.26, respectively. Gavi pricing of RTS,S/AS01 vaccine is EUR 9.30 per dose maximum. R21/Matrix-M vaccine currently costs US$ 3.90 per dose for a two-dose presentation, both prices being driven by the international market price for the adjuvants [68]. Note that pricing could be higher in premium private and traveller markets
  5. eICH zone IVa is hot/humid zone (30 °C and 65% relative humidity) and IVb is hot/higher humidity zone (30 °C and 75% relative humidity) defined according to the International Council for Harmonization of Technical Requirements for Pharmaceuticals for Human Use climate stability zone criteria