Only a small minority of patients who say they are allergic to penicillin will have a reaction if they take a penicillin.

In a clinical trial conducted by the CDC's Tuberculosis Trials Consortium in collaboration with the NIH-funded AIDS Clinical Trials Group, a new 4-month regimen for treatment of drug-susceptible pulmonary tuberculosis was found to be noninferior to 6 months of standard treatment.

Tafasitamab-cxix (Monjuvi – Morphosys), a CD19-directed cytolytic antibody, has received accelerated approval from the FDA for use in combination with lenalidomide (Revlimid) for treatment of relapsed or refractory diffuse large B-cell lymphoma (DLBCL), not otherwise specified, including DLBCL arising from low grade lymphoma, in adults who are not eligible for autologous stem cell transplant. Accelerated approval was based on overall response rates.

Gonadorelin (goe nad oh rell'; in) acetate (Lutrepulse - Ortho), a synthetic decapeptide identical in amino acid sequence to human gonadotropin-releasing hormone (GnRH), was recently approved by the US Food and Drug Administration for treatment of primary hypothalamic amenorrhea. Gonadorelin hydrochloride (Factrel) was previously available for diagnostic use (Medical Letter, 25:106, 1983). Analogs of GnRH have been used to treat endometriosis and advanced cancer of the prostate (Medical Letter, 27:71, 1985).

A biodegradable polymer 'wafer' (Gliadel - Rh ne-Poulenc Rorer) impregnated with the alkylating agent carmustine (BCNU; Bicnu) has been marketed in the USA for local treatment of recurrent glioblastoma multiforme that requires re-operation. The dime-sized polyanhydride wafers are implanted into the surgical cavity left behind after resection. Release of the alkylating agent directly into the area of the tumor bypasses the blood-brain barrier (H Brem and R Langer, Sci Med, 3:1, 1996).

The US Public Health Service Advisory Committee on Immunization Practices has recently published new recommendations for prevention and control of meningococcal disease in college students.

The FDA has approved the use of a transcatheter mitral valve device (MitraClip – Abbott) for percutaneous treatment of significant symptomatic degenerative mitral regurgitation (grade 3-4+) in patients who are at prohibitive risk for mitral valve surgery. It is the first percutaneous nonsurgical treatment approved for this indication.

The FDA has approved an inhalation solution formulation of the long-acting antimuscarinic agent (LAMA) glycopyrrolate (Lonhala Magnair – Sunovion) for maintenance treatment of chronic obstructive pulmonary disease (COPD). The new formulation is delivered using a portable, handheld, electronic nebulizer. Glycopyrrolate is also available as a dry powder inhaler, both alone (Seebri Neohaler) and in combination with indacaterol (Utibron Neohaler), and as a metered-dose inhaler in combination with formoterol (Bevespi Aerosphere). Lonhala Magnair is the first nebulized LAMA to become...

Since the last Medical Letter article on surgical correction of refractive errors (Volume 41, page 122, 1999), some new techniques have been tried and new results have been reported.

Panitumumab (Vectibix - Amgen), a fully human IgG₂ monoclonal antibody that inhibits the epidermal growth factor receptor (EGFR), has been approved by the FDA for treatment of patients with EGFR-expressing metastatic colorectal cancer that has progressed despite standard chemotherapy. It is the second monoclonal antibody EGFR inhibitor to be approved for metastatic colorectal cancer; cetuximab (Erbitux), a human-murine chimeric IgG₁ monoclonal antibody, was approved in 2004.