ThreeDistinctMechanismsofAction
1
SequestersfreeIgEtoblockIgEsignaling.
2
SuppressesB-celldifferentiationintoIgE-secretingplasmacells.
3
RapidclearanceofIgEfromcirculationviahighFcγRIIbbindingandbreakdownintheliver.
Asdemonstratedbyomalizumab,IgEinhibitionisavalidatedstrategyforreducingasthmasymptomsanddisABIlity.However,omalizumabreachesonlyafractionofitsmarketpotentialduetosuboptimalpotency.OptimizedwiththeXmAbimmuneinhibitorFcdomain,XmAb7195hasachievedprofoundlylowlevelsofserumIgEininhumanclinicaltesting,eveninsubjectswithIgElevelstoohightotreatwithomalizumab. XmAb7195offersthepotentialforsuperiorIgEcontrolandsuperiorclinicalefficacy.