The MSOAC approach to developing performance outcomes to measure and monitor multiple sclerosis disability

Background:

The Multiple Sclerosis Outcome Assessments Consortium (MSOAC) was formed by the National MS Society to develop improved measures of multiple sclerosis (MS)-related disability.

Objectives:

(1) To assess the current literature and available data on functional performance outcome measures (PerfOs) and (2) to determine suitability of using PerfOs to quantify MS disability in MS clinical trials.

Methods:

(1) Identify disability dimensions common in MS; (2) conduct a comprehensive literature review of measures for those dimensions; (3) develop an MS Clinical Data Interchange Standards Consortium (CDISC) data standard; (4) create a database of standardized, pooled clinical trial data; (5) analyze the pooled data to assess psychometric properties of candidate measures; and (6) work with regulatory agencies to use the measures as primary or secondary outcomes in MS clinical trials.

Conclusion:

Considerable data exist supporting measures of the functional domains ambulation, manual dexterity, vision, and cognition. A CDISC standard for MS (http://www.cdisc.org/therapeutic#MS) was published, allowing pooling of clinical trial data. MSOAC member organizations contributed clinical data from 16 trials, including 14,370 subjects. Data from placebo-arm subjects are available to qualified researchers. This integrated, standardized dataset is being analyzed to support qualification of disability endpoints by regulatory agencies.

Retropharyngeal calcific tendinitis: report of five cases and review of the literature

Retropharyngeal calcific tendinitis is an inflammation of the longus colli muscle tendon, which is located on the anterior surface of the vertebral column extending from the atlas to the third thoracic vertebra. Five cases of acute retropharyngeal calcific tendinitis seen in the emergency department (ED) over a 15-month period are reported. In addition, a retrospective review of four cases diagnosed as retropharyngeal abscess and admitted to the hospital revealed that two of these cases actually represented retropharyngeal calcific tendinitis. A review of the literature and potential differential diagnoses are presented. For those primary care physicians who must evaluate patients with acute cervical pain, sore throat, or odynophagia, an x-ray study of the neck revealing retropharyngeal calcium deposition should raise the question of the diagnosis of acute retropharyngeal tendinitis. Clinical characteristics of this entity include a painful condition which is treatable and is often mistaken for retropharyngeal abscess, pharyngitis, or peritonsillar abscess. In our opinion, this condition may be more prevalent than the literature suggests.