mycophenolic-acid and Carcinoma--Squamous-Cell

Topics: Azathioprine; Carcinoma, Squamous Cell; Humans; Immunosuppressive Agents; Kidney Transplantation; Mycophenolic Acid; Risk Factors; Skin Neoplasms; Tacrolimus; Ultraviolet Rays

Mycophenolic acid is an antimetabolite used experimentally for the treatment of psoriasis. Thirty-eight patients were treated with mycophenolic acid. A double-blind, placebo-controlled study demonstrated the efficacy of mycophenolic acid (P less than .01). A long-term safety study showed the occurrence of hematologic abnormalities, viral infections, and carcinoma. The position of mycophenolic acid in the therapeutic treatment of psoriasis must await the results of a multicenter cooperative study.

Topics: Adolescent; Adult; Aged; Breast Neoplasms; Carcinoma, Squamous Cell; Clinical Trials as Topic; Double-Blind Method; Epiglottis; Female; Humans; Laryngeal Neoplasms; Male; Middle Aged; Mycophenolic Acid; Psoriasis; Virus Diseases

A case of primary cutaneous post liver transplant lymphoproliferative disorder (PTLD) mimicking squamous cell carcinoma-in-situ is presented.. Lesions mimicking SCC-in-situ were confirmed to be PTLD on histopathology and immunohistochemistry. Immunosuppression was gradually reduced and the lesions were successfully treated with 50 gray (Gy) in 25 fractions of radiotherapy.. There was no recurrence of lesions at 3 months follow-up.. Radiotherapy is an effective form of cutaneous directed treatment for localized PTLD.

Topics: Aged; Antibiotics, Antineoplastic; B-Lymphocytes; Carcinoma, Squamous Cell; Follow-Up Studies; Gamma Rays; Humans; Immunohistochemistry; Liver Cirrhosis, Biliary; Liver Transplantation; Lymphoproliferative Disorders; Male; Mycophenolic Acid; Tacrolimus; Tomography, X-Ray Computed; Treatment Outcome

Chronic immunosuppression after solid-organ transplantation is a risk factor for cutaneous squamous cell carcinoma (cSCC) development. Certain immunosuppressant drugs, namely azathioprine and calcineurin inhibitors, increase this risk more than others. We investigated incidence of cSCC in a Dutch lung transplant recipient (LTR) cohort and analyzed associated risk factors.. All LTRs with post-transplant survival of >30 days were included. Data included indication for lung transplantation and duration of medication use. Skin cancer data were extracted from the Dutch nationwide registry of histopathology (PALGA). Uni- and multivariable hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using Cox proportional hazards regression analyses.. Five hundred forty-four patients were included with a median survival of 11.05 years. Fifty-two (9.6%) LTRs developed at least one cSCC, with a cumulative incidence of 3.9% and 15.3% after 5 and 10 years, respectively. Multivariate analyses showed that the sequential use of azathioprine and mycophenolate mofetil (MMF), both at for least 1 year, was associated with a lower risk of developing cSCC (hazard ratio [HR] 0.24; 95% confidence interval [CI] 0.10 to 0.56) compared with azathioprine use only. Furthermore, age at transplantation (HR 3.42; 95% CI 1.33 to 8.79), male gender (HR 1.75; 95% CI 1.00 to 3.05), previous skin cancer (HR 4.75; 95% CI 1.14 to 19.76), and history of smoking (HR 3.30; 95% CI 1.69 to 6.44) were associated with increased risk of developing cSCC in univariate analyses.. Apart from known risk factors, we found that switching from azathioprine to MMF is associated with reduced incidence of cSCC in LTR, prompting a discussion of whether switching azathioprine to MMF should be considered in high-risk patients.

Topics: Adolescent; Adult; Aged; Azathioprine; Carcinoma, Squamous Cell; Child; Drug Substitution; Female; Humans; Immunosuppressive Agents; Incidence; Lung Transplantation; Male; Middle Aged; Mycophenolic Acid; Postoperative Complications; Risk Assessment; Risk Factors; Skin Neoplasms; Time Factors; Young Adult

Organ transplant recipients (OTRs) have a substantially elevated risk of squamous cell skin carcinoma (SCSC), largely attributed to immunosuppressive medications used to prevent graft rejection, although data to support the role of newer drugs in SCSC risk are sparse. We investigated the association between immunosuppressive medications and SCSC risk among cardiac and renal transplant recipients in the SCOT cohort study. Incident cases were ascertained through medical record review after self-report of skin biopsy (n = 170). Controls without SCSC (n = 324) were matched to cases on sex, age, race, transplant year, hospital, donor type, organ transplanted, and time between transplantation and interview. Conditional logistic regression was used to evaluate the association between specific medications and SCSC. Users of the antimetabolite azathioprine were more than twice as likely to develop SCSC (odds ratio [OR] = 2.67, 95% confidence interval [CI] 1.23-5.76). In contrast, the newer antimetabolite preparations (i.e., mycophenolic acid [MPA]) were associated with lower SCSC risk (OR = 0.45, 95% CI 0.29-0.69). This inverse association between MPA and SCSC persisted among OTRs with no history of azathioprine use, even after adjustment for simultaneous use of the calcineurin inhibitor tacrolimus (OR = 0.52, 95% CI 0.32-0.84). Our data suggest that the increased risk of SCSC historically associated with azathioprine is not seen in OTRs prescribed newer regimens, including MPA and tacrolimus.

Topics: Antibiotics, Antineoplastic; Carcinoma, Squamous Cell; Case-Control Studies; Cohort Studies; Female; Follow-Up Studies; Graft Rejection; Graft Survival; Heart Transplantation; Humans; Immunosuppressive Agents; Incidence; Kidney Transplantation; Male; Middle Aged; Mycophenolic Acid; Postoperative Complications; Prognosis; Risk Factors; Skin Neoplasms; Tacrolimus; Washington

Cancer after heart transplant is recognized as a leading cause of morbidity and mortality. A man's clinical course after receiving a heart transplant is described, with emphasis on important clinical considerations in the care of heart transplant recipients.

Topics: Azathioprine; Carcinoma, Squamous Cell; Drug Therapy, Combination; Fatal Outcome; Glucocorticoids; Heart Transplantation; Humans; Immunosuppressive Agents; Kidney Transplantation; Lung Neoplasms; Male; Mediastinal Neoplasms; Middle Aged; Mycophenolic Acid; Neoplasm Recurrence, Local; Pleural Neoplasms; Prednisone; Sirolimus; Skin Neoplasms; Tacrolimus

Topics: Biopsy; Bone Marrow Transplantation; Carcinoma, Squamous Cell; Chronic Disease; Female; Graft vs Host Disease; Humans; Immunosuppressive Agents; Middle Aged; Mycophenolic Acid; Papillomavirus Infections; Prednisone; Treatment Outcome; Uterine Cervical Dysplasia; Uterine Neoplasms

Topics: Anti-Inflammatory Agents, Non-Steroidal; Carcinoma, Squamous Cell; Drug Therapy, Combination; Female; Humans; Iatrogenic Disease; Immunocompromised Host; Immunosuppressive Agents; Male; Middle Aged; Mycophenolic Acid; Risk Assessment; Scleroderma, Systemic; Skin; Skin Neoplasms

Immunosuppressive therapies allow long-term patient and transplant survival, but are associated with increased development of UV-induced skin cancers, particularly squamous cell carcinomas. The mechanisms by which CsA, MMF, tacrolimus (TAC) or sirolimus (SRL), alone or in dual combinations, influence tumor development and progression are not completely understood. In the current study, chronically UV-exposed mice treated with SRL alone or in combination with CsA or TAC developed more tumors than mice treated with vehicle or other immunosuppressants, but the tumors were significantly smaller and less advanced. Mice treated with CsA or TAC developed significantly larger tumors than vehicle-treated mice, and a larger percentage in the CsA group were malignant. The addition of MMF to CsA, but not to TAC, significantly reduced tumor size. Immunosuppressant effects on UVB-induced inflammation and tumor angiogenesis may explain these findings. CsA enhanced both UVB-induced inflammation and tumor blood vessel density, while MMF reduced inflammation. Addition of MMF to CsA reduced tumor size and vascularity. SRL did not affect inflammation, but significantly reduced tumor vascularity. Thus the choice of immunosuppressants has important implications for tumor number, size and progression, likely due to the influence of immunosuppressants on UVB-induced inflammation and angiogenesis.

Topics: Animals; Blood Vessels; Carcinoma, Squamous Cell; Cyclosporine; Disease Models, Animal; Drug Therapy, Combination; Female; Immunosuppressive Agents; Inflammation; Mice; Mice, Hairless; Mycophenolic Acid; Neoplasms, Radiation-Induced; Neovascularization, Pathologic; Sirolimus; Skin Neoplasms; Tacrolimus; Ultraviolet Rays