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Polymorphic Variants of FOXP3 Gene (rs 3761548) and (rs 3761549) are Significantly Associated with the Risk for Recurrent Pregnancy Losses. A Study in High Incidence Zone (Kashmir, North India) Cover

Polymorphic Variants of FOXP3 Gene (rs 3761548) and (rs 3761549) are Significantly Associated with the Risk for Recurrent Pregnancy Losses. A Study in High Incidence Zone (Kashmir, North India)

Open Access
|Dec 2025

Figures & Tables

Figure 1.

Representative gel picture showing restriction digestion of FOXP3 −3279 (rs 3761548) (a) and −2383 (rs 3761549) (b) for genotyping (a) L1-L3: Heterozygous (487,329,158bp), L4 and L5: Homozygous wild (329,158bp), L6 and L7: Homozygous variant (487bp), M=100bp. (b) L1, L2, L4, L9, L10: Homozygous (184,127,77 bp), L3, L5, L6, L7: Heterozygous (261,184,127,77 bp), L8: Homozygous variant (261, 127bp), M= 100bp. bp=base pair, M=marker.

Results of analysis for the selected SNPs with RPL risk and other diseases_

S. No.StudyCountry/EthnicityCase/ControlDiseasep value
3279 FOXP3 rs3761548

1.Naderi et al., 2015 [13]Iran/Asian195/101RPL0.387
2.Saxena et al., 2015 [14]India/Asian200/300RPL<0.001
3.Jabar et al., 2014 [19]Palestine/Asian100/100RPL0.005
4.Wu et al., 2012 [20]China/Asian146/112RPL0.003
5.Sharif et al., 2016 [21]Palestine/Asian100/100RPL0.011
6.Dirsipam et al., 2021 [22]India/Asian150/150RPL<0.001
7.Hadinedoshan et al., 2015 [24]Iran/Asian80/80RPL0.30
8.Mishra et al., 2018 [25]India/Asian100/100RPL0.18
9.Our study (2024)India/Asian120/150RPL<0.001

2383 Foxp3 rs3761549

1.Song et al., 2012 [27]China/Asian408/363Psoriasis vulgaris<0.05
2.Lan et al., 2010 [28]China/Asian120/160SLE<0.05
3.Andre et al., 2011 [29]Brazil/SA177/171Endometriosis0.003
4.Tian et al., 2018 [30]China/Asian560/582Breast Cancern. s
5.Our study (2024)India/Asian120/150RPL0.04

Genotypic and allelic frequencies of FOXP3 3279 C/A and 2383 C/T polymorphism in RPL cases and controls_

SNPGenotype/AlleleCases (%) N=120Controls (%) N=150OR (95% C.I)p value
FOXp3-3279 C/ACC30 (25)69 (46)RefRef
AC76 (63.3)69 (46)2.53 (1.47–4.34)0.0006
AA14 (11.7)12 (8)2.68 (1.1–6.4)0.03
AC+AA90 (75)81 (54)2.5 (1.5–4.3)0.0005

AllelesC136 (56.6)207 (69)RefRef
A104 (43.3)93 (31)1.70 (1.1–2.4)0.003

FOXp3-2383 C/TCC68 (56.6)95 (63.4)RefRef
CT42 (35)51 (34)1.15 (0.6–1.9)0.60
TT10 (8.3)04 (2.6)3.49 (1.0–11.6)0.04
CT+TT52 (43.3)55 (36.6)1.32 (0.8–2.1)0.31

AllelesC178 (74.2)241 (80.3)RefRef
T62 (25.8)59 (19.7)1.42 (0.9–2.1)0.09

Demographic and clinical characteristics of study RPL and Control participants_

Clinico-pathological characteristicsCases Mean ± SDControl Mean ± SDChi Square Test p value
Age29.83 ± 4.4729.58 ± 3.980.690
Live Birth0.40 ± 0.662.38 ± 0.62<0.0001
Number of Pregnancies3.35 ± 1.142.65 ± 0.82<0.0003
Miscarriages2.81 ± 1.080.00 ± 0.00-
Women with no live birth44 (36%)0-
Family History
YES23 (19.1%)15 (10%)Ref
NO97 (80.8%)135 (90%)0.03
Consanguinity
YES38 (31.6%)27 (18%)Ref
NO82 (68.4%)123 (82%)0.01

Combined genotypes of FOXP3 −3279 C/A and −2383 C/T and risk of RPL with respect to clinical characteristics_

MarkerParameterCases n=120Controls (N=150)O.R (95%CI)Fishers Exact Test p value

CCAC+AACCAC+AA
rs3761548Age≤30 years20 (16.6%)54 (45%)39 (26%)33 (22%)3.1 (1.5–6.3)0.001
>30 years10 (8.3%)36 (30%)30 (20%)48 (32%)2.2 (0.9–5.1)0.07
F/HYes5 (4.1%)18 (15%)5 (3.3%)10 (6.6%)1.8 (0.4–7.7)0.47
No25 (20.8)72 (60%)64 (42.6%)71 (47.3%)2.5 (1.4–4.5)0.0009
Cons.CM9 (7.5%)29 (24.1%)6 (4%)21 (14%)0.9 (0.2–3.0)1
NCM21 (17.5%)61 (50.8%)63 (42%)60 (40%)3.0 (1.6–5.6)0.0002

rs3761549 CCCC+TTCCCC+ TT

Age≤30 years40 (33.3%)34 (28.3%)51 (34%)21 (14%)2.0 (1.0–4.0)0.04
>30 years28 (23.3%)18 (15%)44 (29.3%)34 (22.6%)0.8 (0.3–1.7)0.7
F/HYes11 (9.16%)12 (10%)8 (5.3%)7 (4.6%)1.2 (0.3–4.5)0.9
No57 (47.5%)40 (33.3%)87 (58%)48 (32%)1.2 (0.7–2.1)0.4
Cons.CM18 (15%)20 (16.6%)17 (11.3%)10 (6.6%)1.8 (0.6–5.1)0.3
NCM50 (41.6%)32 (26.6%)78 (52%)45 (30%)1.1 (0.6–1.9)0.7
DOI: https://doi.org/10.34763/jmotherandchild.20252901.d-25-00030 | Journal eISSN: 2719-535X | Journal ISSN: 2719-6488
Language: English
Page range: 219 - 226
Submitted on: Aug 11, 2025
Accepted on: Sep 12, 2025
Published on: Dec 4, 2025
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2025 Usma Manzoor, Arshad A. Pandith, Tawseef A. Lone, Amreena Hameed, Falak U Nisa, Ina Amin, Shayesta Rah, Saima Wani, Shayaq Ul Abeer Rasool, Adil Lateef, Aabida Ahmad, published by Institute of Mother and Child
This work is licensed under the Creative Commons Attribution 4.0 License.