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. 2007 Sep;3(9):695–703.

Table 1.

Studies Using Rituximab As Therapy for Mixed Cryoglobulinemia

Study Number of patients (n) Outcomes
Sansonno et al.75 20
  • All received prior IFN α therapy

  • 80% achieved CR,* with a variety of symptoms

  • Profound B-cell depletion demonstrated with recovery after 6 mos

  • Response maintenance at 12 mos was 75%; relapse rate was 25% at average of 7 mos

Lamprecht et al.81 1
  • 45 y woman with purpura, arthralgia, polyneuropathy, and NHL

  • Prior failed IFN α-2b and RBV and cytoxan therapies

  • Remission induced with 6 rituximab infusions; maintained in remission on PEG-IFN α-2b and RBV for 1 year after

Zaja et al.82 15
  • 12/15 HCV-positive pts

  • Rapid response of purpura in all patients

  • Complete but delayed response in neuropathy

  • 2 CR and 1 PR in NHL

  • Steroid-sparing effect shown

  • 1 patient with acute retinal artery thrombosis after infusion #2

Roccatello et al.83 6
  • 5 pts with MPGN; all responded

  • Complete reversal of BM abnormalities in 3/3 pts

  • 2 symptomatic relapses >1 yr after rituximab

Basse et al.84 7
  • All pts post-renal transplant; 5 HCV-positive

  • 2 pts received 4 rituximab infusions and developed disseminated opportunistic infections (1 pt died)

  • 5 pts received 2 rituximab infusions. 2/5 CR; 3/5 improvement with follow-up of 3–19 mos.

Quartuccio et al.85 5
  • All 5 pts had MPGN and responded

  • 3 relapses at 5–12 mos postrituximab

  • 2 pts responded to maintenance doses of rituximab

  • 1 pt had repeat renal biopsy postrituximab with significant improvement

*

Complete response (CR) defined as reduction of cryocrit to less than 75% of initial value and at least two of the following: disappearance of purpura or arthralgia, or weakness or improvement of neuropathy.

IFN

interferon

RBV

ribavirin

NHL

non-Hodgkin's lymphoma

PEG

pegylated

HCV

hepatitis C virus

MPGN

membranous proliferative glomerulonephritis

BM

basement membrane

PR

partial response.