(6R,7R)-7-[((2Z)-2-[({2-[(1,1-dimethylethyl)oxy]-1,1-dimethyl-2-oxoethyl}oxy)imino]-2-{2-[(triphenylmethyl)amino]-1,3-thiazol-4-yl}acetyl)amino]-8-oxo-3-(1-pyridiniumylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

Respiratory sensitisation

Administrative data

Endpoint:

respiratory sensitisation: in chemico

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Justification for type of information:

All non-penicillin beta-lactams have the potential to sensitize individuals, and subsequent exposure to penicillin may result in severe allergic reactions in some patients. Although the frequency of hypersensitivity reactions due to cross-reactivity between beta-lactam classes can be lower than the risk within a class, the hazard posed is present and potentially lifethreatening. The potential health hazard of non-penicillin beta-lactams therefore is similar to that of penicillins. Further similarities between non-penicillin beta-lactams and penicillins are as follows:
• It is difficult to define the minimal dose below which allergic responses are unlikely to occur in humans.
• There is a lack of suitable animal or receptor testing models that are predictive of human
sensitivity.
• The threshold dose at which allergenic response could occur is extremely low and
difficult to detect with current analytical methods.

Non-Penicillin Beta-Lactam Drugs:
A CGMP Framework for Preventing Cross Contamination: US Food and Drug Administration, April 2013