ATL-104

ATL-104

PEP Topic 
Mucositis
Description 

Some plant sugar binding proteins (lectins) may promote epithelial growth and repair due to effects on cell mitosis. ATL-104 is a recombinant form of a plant that is manufactured in Pichia pastoris, a yeast. ATL-104 is formulated as a mouthwash and has been evaluated in the management of mucositis.

Effectiveness Not Established

Research Evidence Summaries

Hunter, A., Mahendra, P., Wilson, K., Fields, P., Cook, G., Peniket, A., … Marcus, R. (2009). Treatment of oral mucositis after peripheral blood SCT with ATL-104 mouthwash: Results from a randomized, double-blind, placebo-controlled trial. Bone Marrow Transplantation, 43, 563–569.

doi: 10.1038/bmt.2008.363
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Study Purpose:

To assess the tolerability of three ATL-104 doses and to assess the efficacy and safety of ATL-104 on mucositis in patients requiring high-dose melphalan or BEAM (carmustine, etoposide, cytarabine, and melphalan) before peripheral blood SCT (PBSCT)

Intervention Characteristics/Basic Study Process:

This study included two parts. In the first part, patients were randomized to receive placebo or ATL-104 in doses of 50, 100, or 150 mg orally by mouthwash as a 15 mL total volume swilled in the mouth for 15-30 seconds and then swallowed. ATL-104 is a plant lectin associated with mitogenic activity and epithelial cell growth. Following harvest of PBSCs, patients received study treatment for three days before beginning a course of chemotherapy. For patients receiving BEAM, chemotherapy lasted for six days, whereas patients receiving high-dose melphalan had one day of treatment. PBSCT was administered 1–2 days after completion of chemotherapy, and patients then received three once daily doses of ATL-104. In the second part, patients were randomized to placebo or to one of the three ATL-104 doses.

Sample Characteristics:

  • The study reported on 63 patients with a mean age of 53.3 years.
  • The sample had 17 females and 46 males.
  • The majority of patients (60.3%) received high-dose melphalan chemotherapy for multiple myeloma, and 39.7% received BEAM chemotherapy for lymphoma.

Setting:

The study was conducted in an inpatient setting in the United Kingdom.

Study Design:

  • Part 1 was a randomized, double-blind, placebo-controlled phase IIa dose escalation study.
  • Part 2 was a randomized, double-blind, placebo-controlled parallel group study.

Measurement Instruments/Methods:

  • The extent and severity of mucositis was assessed daily from screening until the final assessment, which was performed 28 days after the last dose of ATL-104 or at withdrawal.
  • World Health Organization (WHO) and Western Consortium for Cancer Nursing Research (WCCNR) toxicity scales were used.

Results:

Treatment with ATL-104 substantially reduced the median duration of severe oral mucositis compared with placebo (median duration: ATL-104 for two to three days, placebo 10.5 days) (p < 0.001). The effect of ATL-104 on the incidence of severe oral mucositis was inconclusive. Adverse events (AEs) were mild to moderate in intensity with gastrointestinal (GI) AEs being most common.

Conclusions:

ALT-104 substantially reduced the duration of severe mucositis and was well tolerated.

Limitations:

This study had inconclusive results regarding the incidence of severe mucositis. Further studies with a larger number of patients are needed to establish the effects of ATL-104 on the duration and severity of mucositis. Limited range of ATL-104 doses may be responsible for the lack of dose-response.

Nursing Implications:

Mouthwashes are easy to administer; however, adherence is a concern when used preventatively or when the patient has oral discomfort or fatigue. The hospital setting allows for easier monitoring and assistance in promoting adherence. If further studies show a benefit to patients, cost and availability will be influencing factors toward good outcomes.


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