Is the Holy Prepuce still in the Sactum sactorum in Rome?

Charlemagne gave it to Pope Leo III when the latter crowned the former Emperor. Charlemagne claimed that it had been brought to him by an angel while he prayed at the Holy Sepulchre, although a more prosaic report says it was a wedding gift from the Byzantine Empress Irene. The Pope placed it into the Sanctum sanctorum in the Lateran basilica in Rome with other relics.