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Viatris: Treatment for drug-resistant TB

Pretomanid is used with other anti-TB drugs to form a highly effective, shorter regimen for drug-resistant tuberculosis.

Since 2022, we have partnered with Viatris and the TB Alliance using a volume guarantee to help reduce the price of pretomanid, increasing access in countries with a high TB burden.

The challenge

Public health

Tuberculosis (TB) is one of the world’s most deadly infectious diseases. In 2022, when this agreement was signed, more than 1.1 million people died from the disease. TB is preventable and curable but can require specialised treatment if resistant to first line antibiotics. Drug-resistant tuberculosis (DR-TB) is increasingly a global public health crisis, with cases identified on every continent.

In 2022, the World Health Organization (WHO) estimated that 410,000 people are living with DR-TB and approximately 150,000 received treatment. Of those who began treatment in 2020, only 64% were treated successfully. This is partly because previously recommended treatment options required patients to take up to 20 pills per day for up to 20 months. Some of the drugs have toxic side effects, making adherence a challenge.

In 2022, the WHO recommended a treatment regimen called BPaLM that is only six months and includes newer, more effective TB drugs. Trials found the regimen to be more than 89% effective in curing patients with multidrug-resistant TB.

Market situation

Pretomanid (the Pa in BPaLM) was developed by the TB Alliance, which has granted non-exclusive licenses for high-burden, low- and middle-income countries to multiple drug manufacturers, including Viatris.

When the WHO recommended BPaLM, the regimen was much more expensive than the standard of care, meaning procurers and governments faced difficult decisions with limited budgets.

In December 2022, MedAccess, Viatris and the TB Alliance announced that Viatris had agreed to reduce the price of pretomanid by 34% in more than 130 low- and middle-income countries. This price reduction brought the overall price of the BPaLM regimen much closer to current treatment costs, allowing countries to more easily switch to this new, more effective regimen, and is made possible by a volume guarantee agreement.

Impact to date

By the end of 2025:

46,200

additional patients cured or completing treatment

39,700

adverse health events averted

$20.4m

saved for procurers

The product

Pretomanid is used with other anti-TB drugs to form a highly effective treatment regimen. This all-oral, six-month regimen was recommended by the WHO in December 2022 as the preferred option for most people with DR-TB. The regimen (BPaLM) is made up of:

  • bedaquiline (B)
  • pretomanid (Pa)
  • linezolid (L)
  • and moxifloxacin (M)
More about pretomanid

The partnership

MedAccess provided a volume guarantee to Viatris.

Viatris has agreed to reduce the price of pretomanid in over 130 low- and middle-income countries and will continue to produce and supply pretomanid, increasing availability and access.

The new ceiling price is available to more than 130 governments, and NGOs and public sector procurers purchasing pretomanid in those countries.

This price reduction, coupled with a price reduction on bedaquiline in August 2023 reduced the cost of BPaLM to below $500 per six-month patient course.

TB Alliance first developed six-month drug-resistant TB treatment regimens and helped facilitate the volume guarantee. TB Alliance is also supporting countries to plan for and scale up introduction of the BPaLM regimen.

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Impact projections

Our guarantee has reduced the price of pretomanid by 34% when compared to previously offered prices, in more than 130 low- and middle-income countries. This price reduction brings the price of BPaLM much closer to the cost of previously recommended MDR-TB treatment regimens, allowing countries to more easily switch to this new, more effective regimen and accelerating access to innovative treatments.

This agreement also sets a benchmark price for future generic entrants and increases competition in the TB market by supporting a newer entrant.

The partnership will support countries to switch to this new WHO-recommended regimen and facilitate widespread uptake of this highly effective treatment.

We estimate that the partnership will contribute to:

  • enable an additional 36,000 patients to be treated successfully with BPaLM
  • help avert 31,000 potential adverse events that require hospitalisation or cause disability as patients switch from the current standard-of-care
  • save governments and global procurers more than $15.6 million, with additional savings for national healthcare budgets as they care for fewer patients with long-term DR-TB.

How we calculate the impact of this agreement

Lives changed

Downstream patient outcomes were estimated based on final results of the TB PRACTECAL study presented at TB Union 2022, and represent relative risk as compared to current standard-of-care regimens.

Money saved

Impact is estimated based on actual price reductions for pretomanid over the course of the volume guarantee, taking into account expected market dynamics.

Markets shaped

We work with partners, including donors, procurers and Ministries of Health, to track changes in health markets where our investments are supporting access to products. We monitor for changes to policy, procurement practices and supplier movement, all of which affect markets and contribute to the long-term sustainability of impact.

Macleods: 3HP latent TB treatment

3HP preventive therapy protects people with latent TB from developing active TB, with a shorter treatment duration and fewer pills than previous regimens.

From 2021 to 2023, we provided Macleods with a volume guarantee to secure the availability of 3HP, supporting the work of the IMPAACT4TB partnership.

The challenge

Public health

Tuberculosis (TB) is a leading cause of death from an infectious disease. Latent TB infection occurs when someone is infected with TB-causing bacteria but is asymptomatic and non-infectious. About a quarter of the world’s population are estimated to have latent TB and, over a lifetime, 5-10% will develop active TB. The chance of latent TB becoming active is much higher in people living with HIV and household contacts of TB patients, particularly children under five.

The 3HP regimen effectively treats and cures latent TB in most patients. But access to preventive treatment was behind targets for the period 2018-2022. Addressing latent TB is essential to reducing the incidence and mortality of TB globally.

Market situation

The previous standard-of-care for latent TB, called isoniazid preventive therapy (IPT), was developed over 60 years ago and has seen limited uptake and poor patient adherence due to the treatment duration of six months or more. In 2018, the World Health Organization (WHO) updated its global guidance for latent TB management to include 3HP as a treatment option for both adults and children.

Historically, demand for 3HP has been limited by high prices and supply constraints. Prior to Macleods’ entry into the 3HP market, there were no suppliers of fixed-dose combinations and only one supplier of a 3HP co-pack with very limited production capacity.

Impact

By the end of the agreement:

661k

additional people living with HIV completed treatment with 3HP

166k

hospitalisations due to treatment side effects averted

1.3m

approximate cases of latent TB in household contacts averted

The product

3HP is a fixed-dose combination therapy that combines two antibiotics – isoniazid and rifapentine – for the treatment of latent TB. It is a short-course regimen, taken once a week for three months.

Because of its shorter treatment duration and reduced pill burden, 3HP is as effective as IPT, with fewer side effects and better completion rates (90% on 3HP versus 50% on IPT).

More from IMPAACT4TB

The partnership

MedAccess provided a volume guarantee to Macleods.

Macleods will continue to produce and supply 3HP, scaling up capacity to meet increasing demand. Our guarantee enabled Macleods to initially lower its price for 3HP to $15 per patient course, before a further reduction in August 2022 to $14.25 per patient course.

The volume guarantee agreement complemented a broader set of interventions provided by the Clinton Health Access Initiative (CHAI) and Unitaid, as part of the IMPAACT4TB programme led by The Aurum Institute, to support the commercialisation and roll-out of 3HP.

The new ceiling price was available in 138 low- and middle-income countries.

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Impact

By the end of the agreement:

52

countries had accessed 3HP under the terms of our agreement

32%

average price reduction

$29m

in procurement savings

The impact

Our guarantee helped secure Macleods’ commitment to make 3HP available at $14.25 per patient course, setting a low-cost price benchmark for new competitors entering the market.

Since this volume guarantee was announced, a new supplier entered the market at the same price as Macleods, driving greater competition, improving supply sustainability, and increasing product choice.

As of 2024, we estimate the partnership had contributed to:

  • an estimated additional 661,000 people living with HIV completing treatment, improving health outcomes and tackling onward transmission
  • 166,000 fewer people hospitalised due to adverse effects from the medication when compared to the current standard-of-care,
  • an estimated $29 million in procurement savings, through an average price reduction of 32%.

How we calculated the impact of this agreement

Lives changed

Downstream patient outcomes were estimated based on the pooled risk analysis developed for the 2020 update of the WHO Latent Tuberculosis Infection Guidelines, and represent relative risk for people living with HIV when comparing 3HP to the current standard-of-care, isoniazid preventive therapy.

Money saved

Impact was estimated based on actual price reductions for 3HP over the course of the volume guarantee.

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