Latin American algorithm for treatment of relapsing-remitting multiple sclerosis using disease-modifying agents

Effect of photodynamic therapy in the reduction of halitosis in patients with multiple sclerosis: clinical trial

Smell and odours play a vital role in social interaction. Halitosis is a social problem that affects one third of the population, causing a negative impact on the quality of life. There is little knowledge on the prevalence and management of halitosis in multiple sclerosis (MS) patients. The present study aims to evaluate the presence of halitosis in patients with MS when compared to a control group, and also evaluate treatment of the problem with antimicrobial photodynamic therapy (aPDT). This is a case-control clinical study in which 60 patients were evaluated: 30 MS patients in treatment at the Specialties Clinic School of Medicine, and 30 healthy patients, matched in age and gender for the control group. Data was collected on the duration of the disease as well as the degree of disability and medication use in the MS group. For all patients, halitosis was assessed with Oral Chroma™. Individuals with halitosis underwent treatment with tongue scraping and aPDT. The photosensitizer was methylene blue (0.005%) and a THERAPY XT-EC^® laser (660 nm, 9 J, 100 mW for 90 s per point, 320 J cm^-2, 3537 mW cm^-2) was used. Six points 1 cm apart from each other were irradiated in the tongue dorsum. There was a positive correlation between the disability and disease duration. No parameter was correlated with halitosis. Patients with MS have higher levels of SH₂ compounds when compared to the control group (p = 0.003, Mann-Whitney), but after aPDT both groups significantly reduced the levels to under the halitosis threshold. The aPDT scraping treatment was effective in the immediate reduction of halitosis in both groups.

Disease-modifying therapies in multiple sclerosis in Latin America

The treatment of multiple sclerosis (MS) has become increasingly complex during the last 10 years, mainly because of the advent of new and more potent disease-modifying therapies (DMTs). In Latin America, the therapeutic repertoire available for MS treatment is similar to the one in the rest of the world, but the high costs of these drugs, in conjunction with the limited resources of the social security health systems, makes the treatment of MS more difficult. For neurologists in Latin America, providing personalized MS treatment has become a challenge. We present a review of the status of the DMT in Central and South America, benefits as well as limitations for providing full access to these medications in Latin America.

Access and barriers to MS care in Latin America

Multiple sclerosis (MS), an epidemiologically emergent disorder in Latin America (LATAM), poses substantial socioeconomic challenges to a region where most countries remain as economies in development. MS is not health priority despite its economic and communitarian impact with a relatively low prevalence. MS treatments in LATAM have evolved from earlier long-term oral steroids and immunosuppression protocols, to platform disease modifying therapies (DMTs), to the current landscape with more advanced therapeutic molecules. Following FDA approval, a DMT may eventually become available in LATAM conditioned to industrial marketing interest. Most countries do not count all medications in their armamentarium. Access to therapy by the MS population in the region is low (9.5%-42.8%). Generic treatments, biosimilars, and follow-on complex non-biological drugs (CNBD) are commonly available in institutional formularies in LATAM despite their lack of supportive efficacy and safety data and reported molecular differences with the innovators. Savings to health systems thus far have been negligible. Medicine licensing agencies in LATAM, despite limitations in resources, have considerably improved their assessments by incorporating more modern criteria and methodology. Access to symptomatic management, rehabilitation procedures, and the role of patients associations are discussed.

Use of Fingolimod in the Management of Relapsing-Remitting Multiple Sclerosis: Experience from Latin America

Once-daily fingolimod 0.5 mg (FTY720; Gilenya(®), Novartis Pharma AG, Basel, Switzerland) is a sphingosine 1-phosphate receptor modulator that is approved for the treatment of relapsing multiple sclerosis (MS); currently, this includes approval in 13 Latin American countries. However, despite a well-characterized efficacy and safety profile in a large clinical development program, thus far there has been limited representation of patients from across the Latin American region. Differences in MS disease characteristics have been reported for the Latin American population compared with Caucasians, which may be additional to recent improvements in MS diagnosis. Furthermore, healthcare provision and regional socioeconomic factors exist that are unique to Latin America compared with other regions. Therefore, to optimize MS treatment pathways and improve patient clinical outcomes, it is important to investigate the efficacy and safety profile of fingolimod using ethnically relevant data. Here, we review key data from Hispanic patients enrolled in the fingolimod clinical trial program, summarize recent findings from the FIRST LATAM study, and appraise fingolimod data from real-world patient populations.

FUNDING

Novartis Pharma AG, Basel, Switzerland.

Natalizumab adverse events are rare in patients with multiple sclerosis

OBJECTIVE

To assess the prevalence and the profile of adverse events (AE) of natalizumab in patients with multiple sclerosis (MS).

METHODS

Data collection from neurologists attending to patients with MS at specialized units in Brazil.

RESULTS

Data from 103 patients attending the infusion centers of 16 MS units in 9 Brazilian states were included in the study. The total number of infusions was 1,042. Seventy-nine patients (76.7%) did not present any AE. Twenty-four patients (23.3%) presented only mild AE. There were three major AE, including two deaths. These three occurrences, although not necessarily being drug-related, must be taken into consideration.

CONCLUSION

The profile of AEs for natalizumab shows that 97% of patients have none or only mild AE. However, still due to safety worries, the use of this medication should be restricted to MS units under the care of specialized neurologists.