Marstacimab-hncq (Hympavzi – Pfizer), a tissue factor pathway inhibitor (TFPI) antagonist, has been approved by the FDA for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in patients ≥12 years old who have hemophilia A without factor VIII inhibitors or hemophilia B without factor IX inhibitors. It is the first hemophilia treatment to be approved in the US that targets an inhibitor of coagulation and the first to become available in prefilled pens and syringes for subcutaneous administration.

Concizumab (Alhemo – Novo Nordisk), a subcutaneously injected tissue factor pathway inhibitor (TFPI) antagonist, has been approved by the FDA for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in patients ≥12 years old who have hemophilia A with factor VIII inhibitors or hemophilia B with factor IX inhibitors. It is the second TFPI antagonist to be approved in the US for treatment of hemophilia A or B; the TFPI antagonist marstacimab (Hympavzi) is approved for use in patients without inhibitors.

Fitusiran (Qfitlia – Sanofi), a subcutaneously injected, antithrombin-directed, small interfering ribonucleic acid (siRNA), has been approved by the FDA for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in patients ≥12 years old who have hemophilia A with or without factor VIII inhibitors or hemophilia B with or without factor IX inhibitors. It is the first antithrombin-lowering therapy to become available in the US for treatment of hemophilia.

View the Comparison Table: Some Parenteral Anticoagulants for VTE

View the Comparison Table: Some Oral Anticoagulants for VTE

View the Comparison Table: Some Drugs for Gout

Etranacogene dezaparvovec-drlb (Hemgenix – CSL Behring), an adeno-associated virus vector-based gene therapy, has been approved by the FDA for treatment of hemophilia B in adults who currently receive factor IX prophylaxis therapy or have had life-threatening or repeated, serious, spontaneous bleeding episodes. It is the first gene therapy to be approved in the US for this indication.

Influenza is generally a self-limited illness, but complications including pneumonia, respiratory failure, and death can occur, especially in persons at increased risk (see Table 1).

Donidalorsen (Dawnzera – Ionis), a subcutaneously injected prekallikrein-directed antisense oligonucleotide, has been approved by the FDA for prevention of hereditary angioedema (HAE) attacks in patients ≥12 years old. It is the first RNA-targeted drug to be approved in the US for this indication.

On July 10, 2025 Pfizer issued a voluntary recall of certain lots of long-acting intramuscular (IM) benzathine penicillin G (Bicillin L-A) due to particulates identified during visual inspection. The CDC has issued a "Dear Colleague Letter" to alert healthcare providers about the recall and provide advice on how to manage the potentially limited supply of the drug for treatment of syphilis, which has been increasing in the US.2 Benzathine penicillin G is also used for treatment of group A streptococcal pharyngitis and prophylaxis of rheumatic fever.