TAUVID Solution for injection Ref.[10075] Active ingredients:

5.1 Risk of Misdiagnosis in Patients Evaluated for Alzheimer’s disease

TAUVID does not target β-amyloid, one of two required components of the neuropathological diagnosis of AD.

TAUVID performance for detecting tau pathology was assessed in terminally ill patients, the majority of whom had AD dementia with B3 level NFT pathology. TAUVID performance for detecting tau pathology may be lower in patients in earlier stages of the pathological spectrum [see Clinical Studies (14)].

Negative TAUVID Scan

NFTs may be present at levels that qualify for the neuropathological diagnosis of AD (B2 tau pathology in the presence of at least moderate levels of cortical amyloid pathology) in patients with a negative TAUVID scan. Consider additional evaluation to confirm the absence of AD pathology in patients with a negative TAUVID scan.

False Positive TAUVID Scan

Small foci of noncontiguous tracer uptake may lead to a false positive TAUVID scan. Only uptake of tracer in the neocortex should contribute to the interpretation of a positive TAUVID scan [see Dosage and Administration (2.4)].

5.2 Risk of Chronic Traumatic Encephalopathy Misdiagnosis

The safety and effectiveness of TAUVID have not been established for patients being evaluated for CTE. Preliminary non-clinical and clinical investigations suggest differences in tau conformation and distribution may limit flortaucipir F 18 binding. Therefore, TAUVID is not indicated for detection of CTE.

5.3 Radiation Risk

Diagnostic radiopharmaceuticals, including TAUVID, expose patients to radiation [see Dosage and Administration (2.7)]. Radiation exposure is associated with a dose-dependent increased risk of cancer. Ensure safe handling and preparation procedures to protect patients and health care workers from unintentional radiation exposure [see Dosage and Administration (2.1, 2.2)].

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, 1921 study participants were exposed to TAUVID [see Clinical Studies (14)]. In these studies, 1192 study participants received 240 MBq of TAUVID (about 65% of the recommended dose) and 729 study participants received 370 MBq of TAUVID (the recommended dose). The adverse reactions reported in greater than 0.5% within the studies are shown in Table 2.

Table 2. Adverse Reactions with a Frequency ≥0.5% in Adults Who Received TAUVID in Clinical Trials (n=1921):

Risk Summary

All radiopharmaceuticals, including TAUVID, have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of radiation dose. Advise a pregnant woman of the potential risks of fetal exposure to radiation doses with administration of TAUVID. TAUVID is not likely to be used in females of reproductive age.

There are no available data on TAUVID use in pregnant women. No animal reproduction studies using flortaucipir F 18 have been conducted to evaluate its effect on female reproduction and embryo-fetal development.

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.

Risk Summary

There are no data on the presence of flortaucipir F 18 in human milk, or its effects on the breastfed infant or milk production. Lactation studies have not been conducted in animals. Advise a lactating woman to avoid breastfeeding for 4 hours after TAUVID administration in order to minimize radiation exposure to a breastfed infant.

The safety and effectiveness of TAUVID in pediatric patients have not been established.

Of 1921 study participants in completed clinical studies of TAUVID, 1544 (80%) TAUVID-treated subjects were ≥65 years old, while 839 (44%) were ≥75 years old. No overall differences in safety or effectiveness of TAUVID were observed between subjects ≥65 years old and younger adult subjects.