Late second dose; This non-serious case was reported by a pharmacist via call center representative and described the occurrence of drug dose administration interval too long in a 43-year-old female patient who received HAB (Twinrix) (batch number D4774, expiry date 12-SEP-2026) for prophylaxis. Previously administered products included Twinrix (1st dose received on 12th August 2024). On 02-JAN-2025, the patient received the 2nd dose of Twinrix. On 02-JAN-2025, an unknown time after receiving Twinrix, the patient experienced drug dose administration interval too long (Verbatim: Late second dose). The outcome of the drug dose administration interval too long was unknown. This report is made by GSK without prejudice and does not imply any admission or liability for the incident or its consequences. Additional Information: GSK Receipt Date: 02-JAN-2025 Pharmacist called to verify when the 3rd dose of Twinrix should be administered if the first dose was administered on 12th August 2024 and the second dose on 2nd January 2025. The vaccine administration facility is the same as primary reporter. The patient received second dose of Twinrix, later than the recommended interval, which led to lengthening of vaccination schedule. The case is linked with case US2025000310, reported by the same reporter for husband.; Sender’s Comments: US-GSK-US2025000310:Same reporter/ Different patient (Husband case)