Table III.

Selected Estimates of LPD Prevalence in Parents of Probands

Estimated Lifetime Risk in Parents:	CLL Probands DFCI	SEER Lifetime Risk	NHL Probands DFCI
Mother: CLL	3.1 (1.7–5.1)	0.36 (.35-.37)	0.74 (0.3–1.4)
Father: CLL	2.0 (0.9–3.7)	0.56 (.54-.57)	0.50 (0.2–1.1)
Mother: NHL	1.1 (0.3–2.6)	1.87 (1.85–1.9)	1.24 (0.7–2.0)
Father: NHL	1.55 (0.6–3.2)	2.19 (2.16–2.22)	2.81 (2.0–3.9)
Mother: HL	0.66 (0.1–1.9)	0.2 (0.2–0.21)	0.33 (0.09–0.8)
Father: HL	0.22 (0.006–1.2)	0.24 (0.23–0.25)	0.5 (0.2–1.1)

Statistically significant findings in this table are underlined.

The rates of CLL reported in both mothers and fathers of CLL probands are statistically greater than the rates reported in SEER (p < 0.05).

The rate of NHL in fathers of NHL probands is greater than the rate of NHL in mothers of NHL probands (p = 0.026).