Kristinsson SY, Pfeiffer RM, Björkholm M, et al. Arterial and venous thrombosis in monoclonal gammopathy of undetermined significance and multiple myeloma: a population-based study. Blood. 2010;115(24):4991–4998.

On pages 4993 and 4996 in the 17 June 2010, issue, there are errors in 3 sentences.

On page 4993, in “Results” under the heading “Survival in relation to thrombosis in MM and MGUS,” the first sentence reads: “Survival in MM patients with versus without thrombosis was not statistically different at 5 (HR = 1.0; 95% CI, 0.3-3.5) or 10 years (HR = 0.8; 95% CI, 0.4-1.6).” The sentence should have read: “Survival among MGUS patients that developed MM with versus without thrombosis was not statistically different at 5 (HR = 1.0; 95% CI, 0.3-3.5) or 10 years (HR = 0.8; 95% CI, 0.4-1.6).”

On page 4993, in “Discussion” the fourth sentence of the first paragraph reads: “In accordance with other studies, thrombosis in MM patients had no effect on survival.³³ “The sentence should have read: “Similar to prior studies showing that MM patients with a thrombosis have no altered survival, we found that thrombosis in MGUS patients who progressed to MM had no effect on survival.³³”

On page 4996, the second sentence in the third paragraph should have been omitted: “The same did not apply to MM patients, which is in accordance with another study.³³”