Table 1.

A/T/N markers and patterns of brain atrophy in mild cognitive impairment, compared with normal controls and AD patients. Individuals, who were positive for A, T and N markers may have elevated risk for both cognitive decline and MCI to AD progression.

	Controls	MCI Patients, Remained Stable	MCI Patients, Progressed to AD	AD
A+T+N+	19%	29%	54%	63%
A+T+N−	9%	19%	30%	19%
A+T−N−	18%	11%	5%	10%
A−T+N−	10%	6%	1.5%	2%
A−T+N+	7%	5%	1.5%	2%
A−T−N−	2%	NA	NA	NA
A+T−N+	NA	NA	NA	NA
A−T−N−	43%	31%	8%	4%