TY - JOUR
T1 - Lymphoma and multiple myeloma in cohorts of persons exposed to ionising radiation at a young age
AU - Little, Mark P.
AU - Wakeford, Richard
AU - Zablotska, Lydia B.
AU - Borrego, David
AU - Griffin, Keith T.
AU - Allodji, Rodrigue S.
AU - de Vathaire, Florent
AU - Lee, Choonsik
AU - Brenner, Alina V.
AU - Miller, Jeremy S.
AU - Campbell, David
AU - Sadetzki, Siegal
AU - Doody, Michele M.
AU - Holmberg, Erik
AU - Lundell, Marie
AU - Adams, Michael Jacob
AU - French, Benjamin
AU - Linet, Martha S.
AU - de Gonzalez, Amy Berrington
N1 - Publisher Copyright:
© 2021, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
PY - 2021/10/1
Y1 - 2021/10/1
N2 - There is limited evidence that non-leukaemic lymphoid malignancies are radiogenic. As radiation-related cancer risks are generally higher after childhood exposure, we analysed pooled lymphoid neoplasm data in nine cohorts first exposed to external radiation aged <21 years using active bone marrow (ABM) and, where available, lymphoid system doses, and harmonised outcome classification. Relative and absolute risk models were fitted. Years of entry spanned 1916–1981. At the end of follow-up (mean 42.1 years) there were 593 lymphoma (422 non-Hodgkin (NHL), 107 Hodgkin (HL), 64 uncertain subtype), 66 chronic lymphocytic leukaemia (CLL) and 122 multiple myeloma (MM) deaths and incident cases among 143,136 persons, with mean ABM dose 0.14 Gy (range 0–5.95 Gy) and mean age at first exposure 6.93 years. Excess relative risk (ERR) was not significantly increased for lymphoma (ERR/Gy = −0.001; 95% CI: −0.255, 0.279), HL (ERR/Gy = −0.113; 95% CI: −0.669, 0.709), NHL + CLL (ERR/Gy = 0.099; 95% CI: −0.149, 0.433), NHL (ERR/Gy = 0.068; 95% CI: −0.253, 0.421), CLL (ERR/Gy = 0.320; 95% CI: −0.678, 1.712), or MM (ERR/Gy = 0.149; 95% CI: −0.513, 1.063) (all p-trend > 0.4). In six cohorts with estimates of lymphatic tissue dose, borderline significant increased risks (p-trend = 0.02–0.07) were observed for NHL + CLL, NHL, and CLL. Further pooled epidemiological studies are needed with longer follow-up, central outcome review by expert hematopathologists, and assessment of radiation doses to lymphoid tissues.
AB - There is limited evidence that non-leukaemic lymphoid malignancies are radiogenic. As radiation-related cancer risks are generally higher after childhood exposure, we analysed pooled lymphoid neoplasm data in nine cohorts first exposed to external radiation aged <21 years using active bone marrow (ABM) and, where available, lymphoid system doses, and harmonised outcome classification. Relative and absolute risk models were fitted. Years of entry spanned 1916–1981. At the end of follow-up (mean 42.1 years) there were 593 lymphoma (422 non-Hodgkin (NHL), 107 Hodgkin (HL), 64 uncertain subtype), 66 chronic lymphocytic leukaemia (CLL) and 122 multiple myeloma (MM) deaths and incident cases among 143,136 persons, with mean ABM dose 0.14 Gy (range 0–5.95 Gy) and mean age at first exposure 6.93 years. Excess relative risk (ERR) was not significantly increased for lymphoma (ERR/Gy = −0.001; 95% CI: −0.255, 0.279), HL (ERR/Gy = −0.113; 95% CI: −0.669, 0.709), NHL + CLL (ERR/Gy = 0.099; 95% CI: −0.149, 0.433), NHL (ERR/Gy = 0.068; 95% CI: −0.253, 0.421), CLL (ERR/Gy = 0.320; 95% CI: −0.678, 1.712), or MM (ERR/Gy = 0.149; 95% CI: −0.513, 1.063) (all p-trend > 0.4). In six cohorts with estimates of lymphatic tissue dose, borderline significant increased risks (p-trend = 0.02–0.07) were observed for NHL + CLL, NHL, and CLL. Further pooled epidemiological studies are needed with longer follow-up, central outcome review by expert hematopathologists, and assessment of radiation doses to lymphoid tissues.
UR - http://www.scopus.com/inward/record.url?scp=85106671005&partnerID=8YFLogxK
U2 - 10.1038/s41375-021-01284-4
DO - 10.1038/s41375-021-01284-4
M3 - Article
C2 - 34050261
AN - SCOPUS:85106671005
SN - 0887-6924
VL - 35
SP - 2906
EP - 2916
JO - Leukemia
JF - Leukemia
IS - 10
ER -