No association of ARLTS1 polymorphisms and risk for familial chronic lymphocytic leukaemia
Transcript of No association of ARLTS1 polymorphisms and risk for familial chronic lymphocytic leukaemia
possible bony disease that had been missed on the original
report. The types of missed lesions included three patients with
humeral lesions, three with thoracic spine pedicle loss, three
lumbar spine angular end plate depressions, two femoral
lesions, one pelvic lesion (Fig 1) and two potential fracture
risks. In a further four patients, lytic lesions had been reported
that were not felt to be genuine/significant. As a result of these
findings, the diagnosis was changed from asymptomatic to
symptomatic myeloma requiring treatment in two cases, and
recommendations for orthopaedic intervention or additional
radiotherapy treatment were made in a further five patients.
This data confirm the value of specialist radiological review
at Myeloma MDT meetings with respect to patient manage-
ment and ensuring the accurate staging and treatment of bony
lesions. Interestingly, we observed both false-positive and false-
negative reports compared with the original skeletal survey. A
previous audit between 2001 and 2003 revealed a similar
incidence of missed lesions, emphasising the need for expert
musculoskeletal radiological review for new patients because,
despite on-going training, some lesions may be difficult to
identify by general radiologists. At present, the MDT does not
formally discuss patients with suspected monoclonal gamm-
opathy of undetermined significance who have low-level
plasma cell infiltrates and negative skeletal surveys. Ideally,
these patients should also be reviewed in case lesions are being
missed that would alter the diagnosis, although this would
have a major resource implication.
Jas Singh,1
K. Julia Fairbairn,1
Catherine Williams,2
Emma P. Das-Gupta,2
Nigel H. Russell2
and Jennifer L. Byrne2
1Department of Radiology, Nottingham, University Hospitals Trust, City
Campus, Hucknall Road, Nottingham, and 2Department of
Haematology, Nottingham University Hospitals Trust, City Campus,
Hucknall Road, Nottingham, UK
E-mail: [email protected]
References
Lecouvet, F., Molgham, J., Micjaux, L., Ferrant, A., Michaux, J.C. &
Vande Berg, B.L. (1999) Skeletal survey in advanced multiple
myeloma: radiographic versus MR imaging survey. British Journal of
Haematology, 106, 35–39.
National Institute of Clinical Excellence (2003) Guidance on Cancer
Services – Improving Outcomes in Haematological Cancers – The
manual. http://www.nice.org.uk/pdf/NICE_HAEMATOLOGICAL_
CSG.pdf; [accessed 2003].
Keywords: multiple myeloma, multi-disciplinary teams, skel-
etal survey.
doi:10.1111/j.1365-2141.2007.06536.x
No association of ARLTS1 polymorphisms and risk for familialchronic lymphocytic leukaemia
Chronic lymphocytic leukaemia (CLL) is the most prevalent
form of adult leukaemia in western countries. A subset of CLL
is due to genetic susceptibility. Familial CLL is rare and most
likely represents a genetically heterogeneous disease (Sellick
et al, 2005; Ng et al, 2006). Population and family studies
show a sevenfold increased risk of CLL among first degree
relatives of patients with CLL (Goldin et al, 2004). Deletion of
13q14 is frequently detected in solid tumours, sporadic CLL,
and other lymphoproliferative diseases (Liu et al, 1995). ADP-
ribosylation factor-like tumour-suppressor gene 1 (ARLTS1)
spans a 790 kb segment within a minimal deleted chromosome
region at 13q14Æ3 (Calin et al, 2005). ARLTS1 mediates
apoptosis in lung-cancer transplantation experiments in im-
munodeficient mice (Calin et al, 2005). A non-sense poly-
morphism G446A (Trp149Stop) in ARLTS1 has been reported
to be more frequent (odds ratio 5Æ7, P ¼ 0Æ02) among patients
with a family history of cancer or multiple cancers in
comparison with healthy controls (Calin et al, 2005). In that
previous study, two of seventeen familial CLL cases were
positive for the Trp149Stop polymorphism (Calin et al, 2005).
In the present study, we screened DNA from 31 probands
(males ¼ 17, females ¼ 14, median age at diagnosis ¼ 55,
ethnicity ¼ 100% Caucasian) from the National Cancer Insti-
tute CLL family registry to determine if ARLTS1 variants are
associated with the risk of developing CLL. Coding exons and
splice junctions of ARLTS1 were screened for sequence
variants. Sequence data were compared with the published
ARLTS1 sequence (GenBank reference # NM_138450) using
Sequencher 4Æ5 software (Gene Codes Corp., Ann Arbor, MI,
USA). We also screened DNA from 100 unrelated individuals
on the Centre d’Etude du Polymorphisme Humain (CEPH)
database for ARLTS1 sequence variants. Prior pharmacogenetic
studies comparing allele frequencies of CEPH individuals to
healthy volunteers from Tennessee found that CEPH individ-
uals are representative of the European American population.
Polymorphism frequencies in CLL families and CEPH controls
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Correspondence
were compared. All cases and controls were in Hardy–
Weinberg equilibrium.
DNA sequencing identified the Trp149Stop polymorphism
in two of thirty-one familial CLL cases (Table I). The
ARLTS1 Trp149Stop variant did not cosegregate with CLL
affection status or lymphoproliferative disease in these two
families. Family one (Fig S1a) is a three-generation family of
French/German descent affected with lymphoproliferative
disorders [CLL, non-Hodgkin lymphoma (NHL), monoclonal
gammopathy of unknown significance (MGUS), Walden-
strom macroglobulinemia (WM)]. Sequence analysis revealed
the Trp149Stop polymorphism in the proband with CLL (ID
no. 2006) and his sister with NHL (ID no. 2003), but not in
his sister with CLL (ID no. 2005), brother with MGUS (ID
no. 2002) or his niece (ID no. 1001) diagnosed with WM.
Family two (Fig S1b) is of Greek descent with four siblings
and their father with CLL. The Trp149Stop polymorphism
was detected in only two of four CLL affected siblings (ID no.
1005, 1008).
The ARLTS1 Trp149Stop polymorphism did not show
a statistically significantly higher frequency among 31 families
with CLL compared with CEPH controls. Our findings are
consistent with a recent study showing no evidence of
association between ARLTS1 polymorphisms and CLL risk
among individuals with sporadic and familial CLL (Sellick
et al, 2006). These results are in contrast to a previous report
of an association between Trp149Stop with familial CLL
(Calin et al, 2005). The Ser22Leu, Glu164Lys (Calin et al,
2005) and Lys132Lys (Sellick et al, 2006) were not present in
our study population. We identified three previously reported
ARLTS1 variants (Cys148Arg, Pro131Leu, Ser99Ser) (Calin
et al, 2005; Sellick et al, 2006) in the CLL group. In addition,
we identified a new missense variant (Lys194Gln) among two
CEPH controls (Table I). In conclusion, we found no
association of ARLTS1 polymorphisms and risk for familial
CLL.
Acknowledgements
This research was supported [in part] by the Intramural
Research Program of the NIH, National Cancer Institute,
Division of Cancer Epidemiology and Genetics and Center for
Cancer Research. This study could not have been done without
the generosity of the families and their long term involvement
in our research program.
David Ng1
Ousmane Toure1
Laura Fontaine2
Mary L. McMaster1
Lynn R. Goldin1
Neil Caporaso1
Jorge R. Toro1
1Genetic Epidemiology Branch, Division of Cancer Epidemiology and
Genetics, National Cancer Institute, NIH, DHHS, and2Westat Research Inc., Rockville, MD, USA.
E-mail: [email protected]
References
Calin, G.A., Trapasso, F., Shimizu, M., Dumitru, C.D., Yendamuri, S.,
Godwin, A.K., Ferracin, M., Bernardi, G., Chatterjee, D., Baldassarre,
G., Rattan, S., Alder, H., Mabuchi, H., Shiraishi, T., Hansen, L.L.,
Overgaard, J., Herlea, V., Mauro, F.R., Dighiero, G., Movsas, B.,
Rassenti, L., Kipps, T., Baffa, R., Fusco, A., Mori, M., Russo, G., Liu,
G.G., Neuberg, D., Bullrich, F., Negrini, M. & Croce, C.M. (2005)
Familial cancer associated with a polymorphism in ARLTS1. New
England Journal of Medicine, 352, 1667–1676.
Goldin, L.R., Pfeiffer, R.M., Li, X. & Hemminki, K. (2004) Familial risk
of lymphoproliferative tumors in families of patients with chronic
lymphocytic leukemia: results from the Swedish Family-Cancer
Database. Blood, 104, 1850–1854.
Liu, Y., Hermanson, M., Grander, D., Merup, M., Wu, X., Heyman, M.,
Rasool, O., Juliusson, G., Gahrton, G., Detlofsson, R., Nikiforova, N.,
Buys, C., Soderhall, S., Yankovsky, N., Zabarovsky, E. & Einhorn, S.
(1995) 13q deletions in lymphoid malignancies. Blood, 86, 1911–1915.
Ng, D., Marti, G.E., Fontaine, L., Toro, J.R., Caporaso, N. & Goldin,
L.R. (2006) High density mapping and follow-up studies on
chromosomal regions 1, 3, 6, 12, 13 and 17 in 28 families with
chronic lymphocytic leukaemia. British Journal of Haematology,
133, 59–61.
Sellick, G.S., Webb, E.L., Allinson, R., Matutes, E., Dyer, M.J.S.,
Jonsson, V., Langerak, A.W., Mauro, F.R., Fuller, S., Wiley, J., Lyt-
telton, M., Callea, V., Yuille, M., Cartovsky, D. & Houlston, R.S.
Table I. Frequency of ARLTS1 polymorphisms found in 31 familial CLL cases and 100 CEPH controls.
Nucleotide
variant
Amino acid
change
Case [CLL patients] n ¼ 31
no./total no. (%)
Control [unrelated CEPH]
n ¼ 100 no./total no. (%) Fishers P OR (95%)
c.65C>T Ser22Leu 0/31 0/100
c.297G>A Ser99Ser 1/31 (0Æ03) 9/100 (0Æ09) 0Æ45 0Æ34 (0Æ04–2Æ77)
c.392C>T Pro131Leu 4/31 (0Æ13) 5/100 (0Æ05) 0Æ21 2Æ81 (0Æ71–11Æ22)
c.396G>C Lys132Lys 0/31 0/100
c.442T>C Cys148Arg 18/31 (0Æ58) 67/100 (0Æ67) 0Æ39 0Æ68 (0Æ3–1Æ56)
c.446G>A Trp149Stop 2/31 (0Æ06) 1/100 (0Æ01) 0Æ14 6Æ83 (0Æ6–78)
c.490G>A Glu164Lys 0/31 0/100
c.580A>C Lys194Gln 0/31 (0Æ0) 2/100 (0Æ02) 1Æ0
CLL, chronic lymphocytic leukaemia; CEPH, Centre d’Etude du Polymorphisme Humain; OR, odds ratio.
Journal Compilation ª 2007 Blackwell Publishing Ltd174 No claim to original US government works, British Journal of Haematology, 137, 170–175
Correspondence
(2005) A high-density SNP genomewide linkage scan for chronic
lymphocytic leukemia-susceptibility loci. American Journal of Hu-
man Genetics, 77, 420–429.
Sellick, G.S., Catovsky, D. & Houlston, R.S. (2006) Relationship be-
tween ARLTS1 polymorphisms and risk of chronic lymphocytic
leukemia. Leukemia Research, 30, 1573–1576.
Keywords: familial chronic lymphocytic leukaemia, ARLTS1
mutation analysis.
Supplementary material
The following supplementary material is available for this
article:
Fig S1. Two CLL families with the Trp149Stop polymorphism.
This material is available as part of the online article from:
http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-2141.
2007-06544.x
Please note: Blackwell Publishing are not responsible for the
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Journal Compilation ª 2007 Blackwell Publishing LtdNo claim to original US government works, British Journal of Haematology, 137, 170–175 175
Correspondence