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Quantitative spectroscopic imaging predicts outcome in MLD patients

11 Jan 2018
The fMRI brain scans from UBC Mind Wandering Study. Photo credit: Kalina Christoff/Science Daily

Use of proton magnetic resonance spectroscopic imaging at baseline predicts clinical course of patients with metachromatic leukodystrophy (MLD) and helps identify those eligible for haematopoietic cell transplantation (HCT), according to a retrospective study.

Sixteen of 21 patients with baseline scans (five with good, three with moderate and eight with poor outcome) met the inclusion criteria and were compared with 16 controls in the same age group.

There were significant differences for all metabolite concentrations in white matter for all groups (p<0.001). Patients with MLD, compared with controls, had reduced N-acetylaspartate and glutamate, as well as increased myo-inositol and lactate, which was most pronounced in those with poor outcome (p<0.05 for all posthoc).

Logistic regression demonstrated complete data separation. Creatinine could distinguish poor from moderate and good outcome. The sum of glutamate and glutamine could differentiate from moderate and poor outcome. In addition, N-acetylaspartate could characterize all outcome groups.

The authors evaluated one or more follow-up examinations for 13 patients (eight with baseline scans), which showed stabilization or even partial normalization of metabolites among those with moderate and good outcome, clearly visible in the ratio of choline/N-acetylaspartate.

Of the 21 patients with juvenile or adult MLD included in this study, 12 were HCT-treated. The authors determined clinical outcome as good, moderate or poor. They also quantified metabolites in white matter and examined the significance of metabolite concentrations at baseline for outcome prediction using logistic regression analysis. Evolution of metabolic changes were assessed for patients with follow-up examinations.

MLD is an inherited white matter disorder that can be treated with HCT, according to the authors.

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Most Read Articles
Stephen Padilla, 3 days ago
Treatment with oral thrombopoietin receptor agonist eltrombopag leads to similar platelet counts in patients with chronic immune thrombocytopaenia (cITP) and persistent (per)ITP, according to the results of phase III (EXTEND) and IV studies presented at the 23rd Congress of the European Hematology Association (EHA 2018) held in Stockholm, Sweden.
4 days ago
Socioeconomic status, along with other social determinants, appears to influence the long-term outcomes in Asian acute heart failure patients, according to a recent Japan study.
Pearl Toh, 6 days ago
Lonely people were twice as likely to die from any cause than people who did not feel lonely, according to a study based on a national survey presented at the recent EuroHeartCare 2018 in Dublin, Ireland. Also, loneliness is associated with poorer patient-reported outcomes in terms of mental and physical health in patients with heart disease.
Jairia Dela Cruz, 3 days ago
A treatment regimen combining daratumumab plus bortezomib, melphalan and prednisone markedly extends progression-free survival in patients with multiple myeloma, inducing deep responses and demonstrating acceptable tolerability regardless of baseline renal function, according to the results of the phase III ALCYONE study.