International Journal of Research in Medical Sciences | April 2015 | Vol 3 | Issue 4 Page 998
International Journal of Research in Medical Sciences
Rai R et al. Int J Res Med Sci. 2015 Apr;3(4):998-1001
www.msjonline.org pISSN 2320-6071 | eISSN 2320-6012
Case Report
Fanconi anemia: in all its glory
Rajesh Rai, Keya Lahiri, Pallavi Gahlowt, Vasundhara Chugh, Anand Bhattar*
INTRODUCTION
Fanconi Anemia (FA) is a rare genetic disorder
characterized by progressive bone marrow failure,
1
variable congenital anomalies and a high predisposition
to acute leukemia and other malignancies.
2
FA shows
severe genetic heterogenicity, although the proteins
encoded by FA-related genes are considered to work
together in a common pathway that regulates cellular
resistance to DNA cross-linking agents. At least 15 genes
have been identified that are responsible for FA
complementation groups: FANCA, FANCB, FANCC,
BRCA2 (FANCD1), FANCD2, FANCE, FANCF,
FANCG (XRCC9), FANCI, FANCM, BRIP1 (FANCJ or
BACH1), FANCL, RAD51C (FANCO), and SLX4
(FANCP), PALB2 (FANCN).
3-5
Abnormalities of FA
genes are inherited as autosomal recessive, except for
FANCB mutations, which are inherited in an X-linked
manner. Molecular diagnosis of FA is very complicated
because at least 15 genes are associated with its
development & the mutation spectra of most FA-
associated genes are very diverse. Some of these genes
frequently contain large deletions or duplications.
6
CASE REPORT
An 8-year-old male presented with complaints of not
gaining weight and repeated episodes of vomiting since
one year. He was a full term, normally delivered child.
Physical examination of the patient revealed
microcephaly, short stature, triangular facies, epicanthal
folds, wide nasal bridge, bat ears (Figure 1),
hyperpigmented tongue (Figure 2), microglossia,
micrognathia, Sprengel’s deformity (Figure 3), absent
right thumb (Figure 4), rudimentary left thumb (Figure
5), genu valgum and bilateral retractile testis. He had
multiple café-au-lait spots on left shoulder (Figure 6), left
arm and both thighs. His initial complete blood cell count
results showed white blood cell: 3.5×10
9
/L; hemoglobin:
5.5 g/dL; platelets: 29 × 10
9
/L. Repeat hemogram
indicated persistent thrombocytopenia. Peripheral smear
showed macrocytic, normochromic erythrocytes. Bone
ABSTRACT
Fanconi Anemia (FA) is a rare autosomal recessive disorder affecting multiple body systems. The diagnosis is based
on morphological abnormalities, hematological abnormalities (pancytopenia, macrocytic anemia & progressive bone
marrow failure) and genetic testing. However, genetic testing is complicated for FA because there are often many
genes that are associated with its development, and large duplications, deletions or sequence variations are frequently
observed in some of these genes. We report a patient with cytogenetically confirmed Fanconi anemia. Although
morphological abnormalities were present from birth, diagnosis was suspected and made at 8 years of age when he
presented to us. We report this case to create awareness among clinicians to use modern modalities of diagnosis for
such cases in addition to the clinical assessment. This would further help these children reach their adulthood with
good quality of life.
Keywords: Fanconi anemia, Sprengel’s deformity, Short stature, Absent thumb
Department of Paediatrics, D. Y. Patil University School of Medicine, Navi Mumbai, Maharashtra, India
Received: 07 February 2015
Accepted: 24 February 2015
*Correspondence:
Dr. Anand Bhattar,
E-mail: dranandbhattar@gmail.com
Copyright: © the author(s), publisher and licensee Medip Academy. This is an open-access article distributed under
the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial
use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: 10.5455/2320-6012.ijrms20150438